DataGridViewBand DataGridViewBand DataGridViewBand DataGridViewBand Class

定義

表示 DataGridView 控制項中項目的線性集合。Represents a linear collection of elements in a DataGridView control.

public ref class DataGridViewBand : System::Windows::Forms::DataGridViewElement, ICloneable, IDisposable
public class DataGridViewBand : System.Windows.Forms.DataGridViewElement, ICloneable, IDisposable
type DataGridViewBand = class
    inherit DataGridViewElement
    interface ICloneable
    interface IDisposable
Public Class DataGridViewBand
Inherits DataGridViewElement
Implements ICloneable, IDisposable
繼承
衍生
實作

範例

下列程式碼範例會使用DataGridViewBand管理群組中的儲存格內容DataGridViewThe following code example uses a DataGridViewBand to manipulate properties of groups of cells in a DataGridView.

#using <System.Drawing.dll>
#using <System.dll>
#using <system.windows.forms.dll>
#using <system.drawing.dll>

using namespace System::Drawing;
using namespace System::Windows::Forms;
using namespace System;
using namespace System::Collections;
public ref class DataGridViewBandDemo: public Form
{
private:

#pragma region S " form setup " 

public:
   DataGridViewBandDemo()
   {
      Button1 = gcnew Button;
      Button2 = gcnew Button;
      Button3 = gcnew Button;
      Button4 = gcnew Button;
      Button5 = gcnew Button;
      Button6 = gcnew Button;
      Button7 = gcnew Button;
      Button8 = gcnew Button;
      Button9 = gcnew Button;
      Button10 = gcnew Button;
      FlowLayoutPanel1 = gcnew FlowLayoutPanel;
      InitializeComponent();
      thirdColumnHeader = L"Main Ingredients";
      boringMeatloaf = L"ground beef";
      boringMeatloafRanking = L"*";
      AddButton( Button1, L"Reset", gcnew EventHandler( this, &DataGridViewBandDemo::Button1_Click ) );
      AddButton( Button2, L"Change Column 3 Header", gcnew EventHandler( this, &DataGridViewBandDemo::Button2_Click ) );
      AddButton( Button3, L"Change Meatloaf Recipe", gcnew EventHandler( this, &DataGridViewBandDemo::Button3_Click ) );
      AddAdditionalButtons();
      InitializeDataGridView();
   }

   DataGridView^ dataGridView;
   Button^ Button1;
   Button^ Button2;
   Button^ Button3;
   Button^ Button4;
   Button^ Button5;
   Button^ Button6;
   Button^ Button7;
   Button^ Button8;
   Button^ Button9;
   Button^ Button10;
   FlowLayoutPanel^ FlowLayoutPanel1;

private:
   void InitializeComponent()
   {
      FlowLayoutPanel1->Location = Point(454,0);
      FlowLayoutPanel1->AutoSize = true;
      FlowLayoutPanel1->FlowDirection = FlowDirection::TopDown;
      AutoSize = true;
      ClientSize = System::Drawing::Size( 614, 360 );
      FlowLayoutPanel1->Name = L"flowlayoutpanel";
      Controls->Add( this->FlowLayoutPanel1 );
      Text = this->GetType()->Name;
   }


#pragma endregion 
#pragma region S " setup DataGridView " 
   String^ thirdColumnHeader;
   String^ boringMeatloaf;
   String^ boringMeatloafRanking;
   bool boringRecipe;
   Boolean shortMode;
   void InitializeDataGridView()
   {
      dataGridView = gcnew System::Windows::Forms::DataGridView;
      Controls->Add( dataGridView );
      dataGridView->Size = System::Drawing::Size( 300, 200 );
      
      // Create an unbound DataGridView by declaring a
      // column count.
      dataGridView->ColumnCount = 4;
      AdjustDataGridViewSizing();
      
      // Set the column header style.
      DataGridViewCellStyle^ columnHeaderStyle = gcnew DataGridViewCellStyle;
      columnHeaderStyle->BackColor = Color::Aqua;
      columnHeaderStyle->Font = gcnew System::Drawing::Font( L"Verdana",10,FontStyle::Bold );
      dataGridView->ColumnHeadersDefaultCellStyle = columnHeaderStyle;
      
      // Set the column header names.
      dataGridView->Columns[ 0 ]->Name = L"Recipe";
      dataGridView->Columns[ 1 ]->Name = L"Category";
      dataGridView->Columns[ 2 ]->Name = thirdColumnHeader;
      dataGridView->Columns[ 3 ]->Name = L"Rating";
      
      // Populate the rows.
      array<String^>^row1 = gcnew array<String^>{
         L"Meatloaf",L"Main Dish",boringMeatloaf,boringMeatloafRanking
      };
      array<String^>^row2 = gcnew array<String^>{
         L"Key Lime Pie",L"Dessert",L"lime juice, evaporated milk",L"****"
      };
      array<String^>^row3 = gcnew array<String^>{
         L"Orange-Salsa Pork Chops",L"Main Dish",L"pork chops, salsa, orange juice",L"****"
      };
      array<String^>^row4 = gcnew array<String^>{
         L"Black Bean and Rice Salad",L"Salad",L"black beans, brown rice",L"****"
      };
      array<String^>^row5 = gcnew array<String^>{
         L"Chocolate Cheesecake",L"Dessert",L"cream cheese",L"***"
      };
      array<String^>^row6 = gcnew array<String^>{
         L"Black Bean Dip",L"Appetizer",L"black beans, sour cream",L"***"
      };
      array<Object^>^rows = gcnew array<Object^>{
         row1,row2,row3,row4,row5,row6
      };
      System::Collections::IEnumerator^ myEnum = rows->GetEnumerator();
      while ( myEnum->MoveNext() )
      {
         array<String^>^rowArray = safe_cast<array<String^>^>(myEnum->Current);
         dataGridView->Rows->Add( rowArray );
      }

      PostRowCreation();
      shortMode = false;
      boringRecipe = true;
   }

   void AddButton( Button^ button, String^ buttonLabel, EventHandler^ handler )
   {
      FlowLayoutPanel1->Controls->Add( button );
      button->TabIndex = FlowLayoutPanel1->Controls->Count;
      button->Text = buttonLabel;
      button->AutoSize = true;
      button->Click += handler;
   }


   // Reset columns to initial disorderly arrangement.
   void Button1_Click( Object^ /*sender*/, System::EventArgs^ /*e*/ )
   {
      Controls->Remove( dataGridView );
      dataGridView->~DataGridView();
      InitializeDataGridView();
   }


   // Change the header in column three.
   void Button2_Click( Object^ /*sender*/, System::EventArgs^ /*e*/ )
   {
      Toggle(  &shortMode );
      if ( shortMode )
      {
         dataGridView->Columns[ 2 ]->HeaderText = L"S";
      }
      else
      {
         dataGridView->Columns[ 2 ]->HeaderText = thirdColumnHeader;
      }
   }

   void Toggle( interior_ptr<Boolean> toggleThis )
   {
       *toggleThis =  ! *toggleThis;
   }


   // Change the meatloaf recipe.
   void Button3_Click( Object^ /*sender*/, System::EventArgs^ /*e*/ )
   {
      Toggle(  &boringRecipe );
      if ( boringRecipe )
      {
         SetMeatloaf( boringMeatloaf, boringMeatloafRanking );
      }
      else
      {
         String^ greatMeatloafRecipe = L"1 lb. lean ground beef, "
         L"1/2 cup bread crumbs, 1/4 cup ketchup,"
         L"1/3 tsp onion powder, "
         L"1 clove of garlic, 1/2 pack onion soup mix "
         L" dash of your favorite BBQ Sauce";
         SetMeatloaf( greatMeatloafRecipe, L"***" );
      }
   }

   void SetMeatloaf( String^ recipe, String^ rating )
   {
      dataGridView->Rows[ 0 ]->Cells[ 2 ]->Value = recipe;
      dataGridView->Rows[ 0 ]->Cells[ 3 ]->Value = rating;
   }


#pragma endregion 
#pragma region S " demonstration code " 
   void AddAdditionalButtons()
   {
      AddButton( Button4, L"Freeze First Row", gcnew EventHandler( this, &DataGridViewBandDemo::Button4_Click ) );
      AddButton( Button5, L"Freeze Second Column", gcnew EventHandler( this, &DataGridViewBandDemo::Button5_Click ) );
      AddButton( Button6, L"Hide Salad Row", gcnew EventHandler( this, &DataGridViewBandDemo::Button6_Click ) );
      AddButton( Button7, L"Disable First Column Resizing", gcnew EventHandler( this, &DataGridViewBandDemo::Button7_Click ) );
      AddButton( Button8, L"Make ReadOnly", gcnew EventHandler( this, &DataGridViewBandDemo::Button8_Click ) );
      AddButton( Button9, L"Style Using Tag", gcnew EventHandler( this, &DataGridViewBandDemo::Button9_Click ) );
   }

   void AdjustDataGridViewSizing()
   {
      dataGridView->AutoSizeRowsMode = DataGridViewAutoSizeRowsMode::AllCells;
      dataGridView->ColumnHeadersHeightSizeMode = DataGridViewColumnHeadersHeightSizeMode::AutoSize;
   }


   // Freeze the first row.
   void Button4_Click( Object^ /*sender*/, System::EventArgs^ /*e*/ )
   {
      FreezeBand( dataGridView->Rows[ 0 ] );
   }

   void Button5_Click( Object^ /*sender*/, System::EventArgs^ /*e*/ )
   {
      FreezeBand( dataGridView->Columns[ 1 ] );
   }

   void FreezeBand( DataGridViewBand^ band )
   {
      band->Frozen = true;
      DataGridViewCellStyle^ style = gcnew DataGridViewCellStyle;
      style->BackColor = Color::WhiteSmoke;
      band->DefaultCellStyle = style;
   }


   // Hide a band of cells.
   void Button6_Click( Object^ /*sender*/, System::EventArgs^ /*e*/ )
   {
      DataGridViewBand^ band = dataGridView->Rows[ 3 ];
      band->Visible = false;
   }


   // Turn off user's ability to resize a column.
   void Button7_Click( Object^ /*sender*/, EventArgs^ /*e*/ )
   {
      DataGridViewBand^ band = dataGridView->Columns[ 0 ];
      band->Resizable = DataGridViewTriState::False;
   }


   // Make the entire DataGridView read only.
   void Button8_Click( Object^ /*sender*/, System::EventArgs^ /*e*/ )
   {
      System::Collections::IEnumerator^ myEnum = dataGridView->Columns->GetEnumerator();
      while ( myEnum->MoveNext() )
      {
         DataGridViewBand^ band = safe_cast<DataGridViewBand^>(myEnum->Current);
         band->ReadOnly = true;
      }
   }


   void PostRowCreation()
   {
      SetBandColor( dataGridView->Columns[ 0 ], Color::CadetBlue );
      SetBandColor( dataGridView->Rows[ 1 ], Color::Coral );
      SetBandColor( dataGridView->Columns[ 2 ], Color::DodgerBlue );
   }

   void SetBandColor( DataGridViewBand^ band, Color color )
   {
      band->Tag = color;
   }


   // Color the bands by the value stored in their tag.
   void Button9_Click( Object^ /*sender*/, System::EventArgs^ /*e*/ )
   {
      IEnumerator^ myEnum1 = dataGridView->Columns->GetEnumerator();
      while ( myEnum1->MoveNext() )
      {
         DataGridViewBand^ band = static_cast<DataGridViewBand^>(myEnum1->Current);
         if ( band->Tag != nullptr )
         {
            band->DefaultCellStyle->BackColor =  *dynamic_cast<Color^>(band->Tag);
         }
      }

      IEnumerator^ myEnum2 = safe_cast<IEnumerable^>(dataGridView->Rows)->GetEnumerator();
      while ( myEnum2->MoveNext() )
      {
         DataGridViewBand^ band = safe_cast<DataGridViewBand^>(myEnum2->Current);
         if ( band->Tag != nullptr )
         {
            band->DefaultCellStyle->BackColor =  *dynamic_cast<Color^>(band->Tag);
         }
      }
   }


#pragma endregion 

public:
   static void Main()
   {
      Application::Run( gcnew DataGridViewBandDemo );
   }
};

int main()
{
   DataGridViewBandDemo::Main();
}

using System.Drawing;
using System.Windows.Forms;
using System;

public class DataGridViewBandDemo : Form
{
    #region "form setup"
    public DataGridViewBandDemo()
    {
        InitializeComponent();

        AddButton(Button1, "Reset",
            new EventHandler(Button1_Click));
        AddButton(Button2, "Change Column 3 Header",
            new EventHandler(Button2_Click));
        AddButton(Button3, "Change Meatloaf Recipe",
            new EventHandler(Button3_Click));
        AddAdditionalButtons();

        InitializeDataGridView();
    }

    DataGridView dataGridView;
    Button Button1 = new Button();
    Button Button2 = new Button();
    Button Button3 = new Button();
    Button Button4 = new Button();
    Button Button5 = new Button();
    Button Button6 = new Button();
    Button Button7 = new Button();
    Button Button8 = new Button();
    Button Button9 = new Button();
    Button Button10 = new Button();
    FlowLayoutPanel FlowLayoutPanel1 = new FlowLayoutPanel();

    private void InitializeComponent()
    {
        FlowLayoutPanel1.Location = new Point(454, 0);
        FlowLayoutPanel1.AutoSize = true;
        FlowLayoutPanel1.FlowDirection = FlowDirection.TopDown;
        AutoSize = true;
        ClientSize = new System.Drawing.Size(614, 360);
        FlowLayoutPanel1.Name = "flowlayoutpanel";
        Controls.Add(this.FlowLayoutPanel1);
        Text = this.GetType().Name;
    }
    #endregion

    #region "setup DataGridView"

    private string thirdColumnHeader = "Main Ingredients";
    private string boringMeatloaf = "ground beef";
    private string boringMeatloafRanking = "*";
    private bool boringRecipe;
    private bool shortMode;

    private void InitializeDataGridView()
    {
        dataGridView = new System.Windows.Forms.DataGridView();
        Controls.Add(dataGridView);
        dataGridView.Size = new Size(300, 200);

        // Create an unbound DataGridView by declaring a
        // column count.
        dataGridView.ColumnCount = 4;
        AdjustDataGridViewSizing();

        // Set the column header style.
        DataGridViewCellStyle columnHeaderStyle =
            new DataGridViewCellStyle();
        columnHeaderStyle.BackColor = Color.Aqua;
        columnHeaderStyle.Font =
            new Font("Verdana", 10, FontStyle.Bold);
        dataGridView.ColumnHeadersDefaultCellStyle =
            columnHeaderStyle;

        // Set the column header names.
        dataGridView.Columns[0].Name = "Recipe";
        dataGridView.Columns[1].Name = "Category";
        dataGridView.Columns[2].Name = thirdColumnHeader;
        dataGridView.Columns[3].Name = "Rating";

        // Populate the rows.
        string[] row1 = new string[]{"Meatloaf", 
                                        "Main Dish", boringMeatloaf, boringMeatloafRanking};
        string[] row2 = new string[]{"Key Lime Pie", 
                                        "Dessert", "lime juice, evaporated milk", "****"};
        string[] row3 = new string[]{"Orange-Salsa Pork Chops", 
                                        "Main Dish", "pork chops, salsa, orange juice", "****"};
        string[] row4 = new string[]{"Black Bean and Rice Salad", 
                                        "Salad", "black beans, brown rice", "****"};
        string[] row5 = new string[]{"Chocolate Cheesecake", 
                                        "Dessert", "cream cheese", "***"};
        string[] row6 = new string[]{"Black Bean Dip", "Appetizer",
                                        "black beans, sour cream", "***"};
        object[] rows = new object[] { row1, row2, row3, row4, row5, row6 };

        foreach (string[] rowArray in rows)
        {
            dataGridView.Rows.Add(rowArray);
        }

        PostRowCreation();

        shortMode = false;
        boringRecipe = true;
    }


    void AddButton(Button button, string buttonLabel,
        EventHandler handler)
    {
        FlowLayoutPanel1.Controls.Add(button);
        button.TabIndex = FlowLayoutPanel1.Controls.Count;
        button.Text = buttonLabel;
        button.AutoSize = true;
        button.Click += handler;
    }

    // Reset columns to initial disorderly arrangement.
    private void Button1_Click(object sender, System.EventArgs e)
    {
        Controls.Remove(dataGridView);
        dataGridView.Dispose();
        InitializeDataGridView();
    }

    // Change the header in column three.
    private void Button2_Click(object sender,
        System.EventArgs e)
    {
        Toggle(ref shortMode);
        if (shortMode)
        { dataGridView.Columns[2].HeaderText = "S"; }
        else
        { dataGridView.Columns[2].HeaderText = thirdColumnHeader; }
    }

    private static void Toggle(ref bool toggleThis)
    {
        toggleThis = !toggleThis;
    }

    // Change the meatloaf recipe.
    private void Button3_Click(object sender,
        System.EventArgs e)
    {
        Toggle(ref boringRecipe);
        if (boringRecipe)
        {
            SetMeatloaf(boringMeatloaf, boringMeatloafRanking);
        }
        else
        {
            string greatMeatloafRecipe =
                "1 lb. lean ground beef, " +
                "1/2 cup bread crumbs, 1/4 cup ketchup," +
                "1/3 tsp onion powder, " +
                "1 clove of garlic, 1/2 pack onion soup mix " +
                " dash of your favorite BBQ Sauce";
            SetMeatloaf(greatMeatloafRecipe, "***");
        }
    }

    private void SetMeatloaf(string recipe, string rating)
    {
        dataGridView.Rows[0].Cells[2].Value = recipe;
        dataGridView.Rows[0].Cells[3].Value = rating;
    }
    #endregion

    #region "demonstration code"
    private void AddAdditionalButtons()
    {
        AddButton(Button4, "Freeze First Row",
            new EventHandler(Button4_Click));
        AddButton(Button5, "Freeze Second Column",
            new EventHandler(Button5_Click));
        AddButton(Button6, "Hide Salad Row",
            new EventHandler(Button6_Click));
        AddButton(Button7, "Disable First Column Resizing",
            new EventHandler(Button7_Click));
        AddButton(Button8, "Make ReadOnly",
            new EventHandler(Button8_Click));
        AddButton(Button9, "Style Using Tag",
            new EventHandler(Button9_Click));
    }

    private void AdjustDataGridViewSizing()
    {
        dataGridView.AutoSizeRowsMode =
            DataGridViewAutoSizeRowsMode.AllCells;
        dataGridView.ColumnHeadersHeightSizeMode = 
            DataGridViewColumnHeadersHeightSizeMode.AutoSize;
    }

    // Freeze the first row.
    private void Button4_Click(object sender, System.EventArgs e)
    {

        FreezeBand(dataGridView.Rows[0]);
    }

    private void Button5_Click(object sender, System.EventArgs e)
    {

        FreezeBand(dataGridView.Columns[1]);
    }

    private static void FreezeBand(DataGridViewBand band)
    {
        band.Frozen = true;
        DataGridViewCellStyle style = new DataGridViewCellStyle();
        style.BackColor = Color.WhiteSmoke;
        band.DefaultCellStyle = style;
    }

    // Hide a band of cells.
    private void Button6_Click(object sender, System.EventArgs e)
    {

        DataGridViewBand band = dataGridView.Rows[3];
        band.Visible = false;
    }

    // Turn off user's ability to resize a column.
    private void Button7_Click(object sender, EventArgs e)
    {

        DataGridViewBand band = dataGridView.Columns[0];
        band.Resizable = DataGridViewTriState.False;
    }

    // Make the entire DataGridView read only.
    private void Button8_Click(object sender, System.EventArgs e)
    {
        foreach (DataGridViewBand band in dataGridView.Columns)
        {
            band.ReadOnly = true;
        }
    }

    private void PostRowCreation()
    {
        SetBandColor(dataGridView.Columns[0], Color.CadetBlue);
        SetBandColor(dataGridView.Rows[1], Color.Coral);
        SetBandColor(dataGridView.Columns[2], Color.DodgerBlue);
    }

    private static void SetBandColor(DataGridViewBand band, Color color)
    {
        band.Tag = color;
    }

    // Color the bands by the value stored in their tag.
    private void Button9_Click(object sender, System.EventArgs e)
    {

        foreach (DataGridViewBand band in dataGridView.Columns)
        {
            if (band.Tag != null)
            {
                band.DefaultCellStyle.BackColor = (Color)band.Tag;
            }
        }

        foreach (DataGridViewBand band in dataGridView.Rows)
        {
            if (band.Tag != null)
            {
                band.DefaultCellStyle.BackColor = (Color)band.Tag;
            }
        }
    }
    #endregion

    [STAThreadAttribute()]
    public static void Main()
    {
        Application.Run(new DataGridViewBandDemo());
    }
}
Imports System.Windows.Forms
Imports System.Drawing

Public Class DataGridViewBandDemo
    Inherits Form

#Region "Form setup"
    Public Sub New()
        MyBase.New()
        InitializeComponent()

        AddButton(Button1, "Reset")
        AddButton(Button2, "Change Column 3 Header")
        AddButton(Button3, "Change Meatloaf Recipe")
        AddAdditionalButtons()
    End Sub

    Friend WithEvents dataGridView As DataGridView
    Friend WithEvents Button1 As Button = New Button()
    Friend WithEvents Button2 As Button = New Button()
    Friend WithEvents Button3 As Button = New Button()
    Friend WithEvents Button4 As Button = New Button()
    Friend WithEvents Button5 As Button = New Button()
    Friend WithEvents Button6 As Button = New Button()
    Friend WithEvents Button7 As Button = New Button()
    Friend WithEvents Button8 As Button = New Button()
    Friend WithEvents Button9 As Button = New Button()
    Friend WithEvents Button10 As Button = New Button()
    Friend WithEvents FlowLayoutPanel1 As FlowLayoutPanel _
        = New FlowLayoutPanel()

    Private Sub InitializeComponent()
        FlowLayoutPanel1.Location = New Point(454, 0)
        FlowLayoutPanel1.AutoSize = True
        FlowLayoutPanel1.FlowDirection = FlowDirection.TopDown
        FlowLayoutPanel1.Name = "flowlayoutpanel"
        ClientSize = New System.Drawing.Size(614, 360)
        Controls.Add(FlowLayoutPanel1)
        Text = Me.GetType.Name
        AutoSize = True
    End Sub
#End Region

#Region "setup DataGridView"
    Private thirdColumnHeader As String = "Main Ingredients"
    Private boringMeatloaf As String = "ground beef"
    Private boringMeatloafRanking As String = "*"
    Private boringRecipe As Boolean
    Private shortMode As Boolean

    Private Sub InitializeDataGridView(ByVal ignored As Object, _
    ByVal ignoredToo As EventArgs) Handles Me.Load

        dataGridView = New System.Windows.Forms.DataGridView
        Controls.Add(dataGridView)
        dataGridView.Size = New Size(300, 200)

        ' Create an unbound DataGridView by declaring a
        ' column count.
        dataGridView.ColumnCount = 4
        AdjustDataGridViewSizing()

        ' Set the column header style.
        Dim columnHeaderStyle As New DataGridViewCellStyle
        columnHeaderStyle.BackColor = Color.Aqua
        columnHeaderStyle.Font = _
            New Font("Verdana", 10, FontStyle.Bold)
        dataGridView.ColumnHeadersDefaultCellStyle = _
            columnHeaderStyle

        ' Set the column header names.
        dataGridView.Columns(0).Name = "Recipe"
        dataGridView.Columns(1).Name = "Category"
        dataGridView.Columns(2).Name = thirdColumnHeader
        dataGridView.Columns(3).Name = "Rating"

        ' Populate the rows.
        Dim row1 As String() = New String() _
            {"Meatloaf", "Main Dish", boringMeatloaf, _
            boringMeatloafRanking}
        Dim row2 As String() = New String() _
            {"Key Lime Pie", "Dessert", _
            "lime juice, evaporated milk", _
            "****"}
        Dim row3 As String() = New String() _
            {"Orange-Salsa Pork Chops", "Main Dish", _
            "pork chops, salsa, orange juice", "****"}
        Dim row4 As String() = New String() _
            {"Black Bean and Rice Salad", "Salad", _
            "black beans, brown rice", _
            "****"}
        Dim row5 As String() = New String() _
            {"Chocolate Cheesecake", "Dessert", "cream cheese", _
            "***"}
        Dim row6 As String() = New String() _
            {"Black Bean Dip", "Appetizer", _
            "black beans, sour cream", _
                "***"}
        Dim rows As Object() = New Object() {row1, row2, _
            row3, row4, row5, row6}

        Dim rowArray As String()
        For Each rowArray In rows
            dataGridView.Rows.Add(rowArray)
        Next

        PostRowCreation()

        shortMode = False
        boringRecipe = True
    End Sub

    Protected Sub AddButton(ByVal button As Button, _
        ByVal buttonLabel As String)

        FlowLayoutPanel1.Controls.Add(button)
        button.TabIndex = FlowLayoutPanel1.Controls.Count
        button.Text = buttonLabel
        button.AutoSize = True
    End Sub

    ' Reset columns to initial disorderly arrangement.
    Private Sub ResetToDisorder(ByVal sender As Object, _
        ByVal e As System.EventArgs) _
        Handles Button1.Click
        Controls.Remove(dataGridview)
        dataGridView.Dispose()
        InitializeDataGridView(Nothing, Nothing)
    End Sub

    ' Change the header in column three.
    Private Sub Button2_Click(ByVal sender As Object, _
        ByVal e As System.EventArgs) _
        Handles Button2.Click

        Toggle(shortMode)
        If shortMode Then dataGridView.Columns(2).HeaderText = _
            "S" _
            Else dataGridView.Columns(2).HeaderText = _
                thirdColumnHeader
    End Sub

    Private Shared Sub Toggle(ByRef toggleThis As Boolean)
        toggleThis = Not toggleThis
    End Sub

    ' Change the meatloaf recipe.
    Private Sub Button3_Click(ByVal sender As Object, _
        ByVal e As System.EventArgs) _
        Handles Button3.Click

        Toggle(boringRecipe)
        If boringRecipe Then
            SetMeatloaf(boringMeatloaf, boringMeatloafRanking)
        Else
            Dim greatMeatloafRecipe As String = "1 lb. lean ground beef, " _
                & "1/2 cup bread crumbs, 1/4 cup ketchup," _
                & "1/3 tsp onion powder, " _
                & "1 clove of garlic, 1/2 pack onion soup mix " _
                & " dash of your favorite BBQ Sauce"
            SetMeatloaf(greatMeatloafRecipe, "***")
        End If
    End Sub

    Private Sub SetMeatloaf(ByVal recipe As String, _
        ByVal rating As String)

        dataGridView.Rows(0).Cells(2).Value = recipe
        dataGridView.Rows(0).Cells(3).Value = rating
    End Sub
#End Region

#Region "demonstration code"
    Private Sub AddAdditionalButtons()
        AddButton(Button4, "Freeze First Row")
        AddButton(Button5, "Freeze Second Column")
        AddButton(Button6, "Hide Salad Row")
        AddButton(Button7, "Disable First Column Resizing")
        AddButton(Button8, "Make ReadOnly")
        AddButton(Button9, "Style Using Tag")
    End Sub

    Private Sub AdjustDataGridViewSizing()
        dataGridView.AutoSizeRowsMode = _
            DataGridViewAutoSizeRowsMode.AllCells
        dataGridView.ColumnHeadersHeightSizeMode = _
            DataGridViewColumnHeadersHeightSizeMode.AutoSize
    End Sub

    ' Freeze the first row.
    Private Sub Button4_Click(ByVal sender As Object, _
        ByVal e As System.EventArgs) Handles Button4.Click

        FreezeBand(dataGridView.Rows(0))
    End Sub

    Private Sub FreezeColumn(ByVal sender As Object, _
        ByVal e As System.EventArgs) Handles Button5.Click

        FreezeBand(dataGridView.Columns(1))
    End Sub

    Private Shared Sub FreezeBand(ByVal band As DataGridViewBand)

        band.Frozen = True
        Dim style As DataGridViewCellStyle = New DataGridViewCellStyle()
        style.BackColor = Color.WhiteSmoke
        band.DefaultCellStyle = style

    End Sub

    ' Hide a band of cells.
    Private Sub Button6_Click(ByVal sender As Object, _
        ByVal e As System.EventArgs) Handles Button6.Click

        Dim band As DataGridViewBand = dataGridView.Rows(3)
        band.Visible = False
    End Sub

    ' Turn off user's ability to resize a column.
    Private Sub Button7_Click(ByVal sender As Object, _
        ByVal e As System.EventArgs) Handles Button7.Click

        Dim band As DataGridViewBand = dataGridView.Columns(0)
        band.Resizable = DataGridViewTriState.False
    End Sub

    ' Make the entire DataGridView read only.
    Private Sub Button8_Click(ByVal sender As Object, _
        ByVal e As System.EventArgs) Handles Button8.Click

        For Each band As DataGridViewBand In dataGridView.Columns
            band.ReadOnly = True
        Next
    End Sub

    Private Sub PostRowCreation()
        SetBandColor(dataGridView.Columns(0), Color.CadetBlue)
        SetBandColor(dataGridView.Rows(1), Color.Coral)
        SetBandColor(dataGridView.Columns(2), Color.DodgerBlue)
    End Sub

    Private Shared Sub SetBandColor(ByVal band As DataGridViewBand, _
        ByVal color As Color)
        band.Tag = color
    End Sub

    ' Color the bands by the value stored in their tag.
    Private Sub Button9_Click(ByVal sender As Object, _
        ByVal e As System.EventArgs) Handles Button9.Click

        For Each band As DataGridViewBand In dataGridView.Columns
            If band.Tag IsNot Nothing Then
                band.DefaultCellStyle.BackColor = _
                    CType(band.Tag, Color)
            End If
        Next

        For Each band As DataGridViewBand In dataGridView.Rows
            If band.Tag IsNot Nothing Then
                band.DefaultCellStyle.BackColor = _
                    CType(band.Tag, Color)
            End If
        Next
    End Sub
#End Region

    <STAThreadAttribute()> _
    Public Shared Sub Main()
        Application.Run(New DataGridViewBandDemo())
    End Sub
End Class

備註

DataGridViewBand類別代表DataGridViewCell聯結在一起,可以操作為群組的群組列中的項目。The DataGridViewBand class represents DataGridViewCell elements joined together in a band that can be manipulated as a group. 每個項目通常是的執行個體DataGridViewCell或其中一個衍生的類別。Each element is typically an instance of DataGridViewCell or one of its derived classes. 雖然DataGridViewHeaderCell關聯與每個群組列中,標頭資料格不會考慮的群組列的項目。Although a DataGridViewHeaderCell is associated with each band, header cells are not considered elements of the band.

DataGridViewBand 是基底類別DataGridViewRowDataGridViewColumn類別。DataGridViewBand is the base class of the DataGridViewRow and DataGridViewColumn classes. 有沒有公用建構函式DataGridViewBand型別,因此存取群組列的唯一方式是透過資料行和資料列才DataGridViewThere are no public constructors for the DataGridViewBand type, so the only way to access a band is through columns and rows in a DataGridView.

屬性

ContextMenuStrip ContextMenuStrip ContextMenuStrip ContextMenuStrip

取得或設定群組列的捷徑功能表。Gets or sets the shortcut menu for the band.

DataGridView DataGridView DataGridView DataGridView

取得與這個項目有關聯的 DataGridView 控制項。Gets the DataGridView control associated with this element.

(Inherited from DataGridViewElement)
DefaultCellStyle DefaultCellStyle DefaultCellStyle DefaultCellStyle

取得或設定群組列的預設儲存格樣式。Gets or sets the default cell style of the band.

DefaultHeaderCellType DefaultHeaderCellType DefaultHeaderCellType DefaultHeaderCellType

取得或設定預設標題儲存格的執行階段型別。Gets or sets the run-time type of the default header cell.

Displayed Displayed Displayed Displayed

取得值,指出此群組列目前是否顯示在螢幕上。Gets a value indicating whether the band is currently displayed onscreen.

Frozen Frozen Frozen Frozen

取得或設定值,指出當使用者透過 DataGridView 捲動時,群組列是否會移動。Gets or sets a value indicating whether the band will move when a user scrolls through the DataGridView.

HasDefaultCellStyle HasDefaultCellStyle HasDefaultCellStyle HasDefaultCellStyle

取得指出是否已經設定 DefaultCellStyle 屬性的值。Gets a value indicating whether the DefaultCellStyle property has been set.

HeaderCellCore HeaderCellCore HeaderCellCore HeaderCellCore

取得或設定 DataGridViewBand 的標題儲存格。Gets or sets the header cell of the DataGridViewBand.

Index Index Index Index

取得 DataGridView 控制項內群組列的相對位置。Gets the relative position of the band within the DataGridView control.

InheritedStyle InheritedStyle InheritedStyle InheritedStyle

取得對目前的群組列有效的儲存格樣式,並考量帳戶樣式繼承。Gets the cell style in effect for the current band, taking into account style inheritance.

IsRow IsRow IsRow IsRow

取得值,指出群組列是否表示資料列。Gets a value indicating whether the band represents a row.

ReadOnly ReadOnly ReadOnly ReadOnly

取得或設定值,指出使用者是否可以編輯群組列的儲存格。Gets or sets a value indicating whether the user can edit the band's cells.

Resizable Resizable Resizable Resizable

取得或設定值,指出群組列是否可以在使用者介面 (UI) 中調整大小。Gets or sets a value indicating whether the band can be resized in the user interface (UI).

Selected Selected Selected Selected

取得或設定值,指出群組列是否位於已選取的使用者介面 (UI) 狀態下。Gets or sets a value indicating whether the band is in a selected user interface (UI) state.

State State State State

取得此項目的使用者介面 (UI) 狀態。Gets the user interface (UI) state of the element.

(Inherited from DataGridViewElement)
Tag Tag Tag Tag

取得或設定物件,其中包含與群組列相關的資料。Gets or sets the object that contains data to associate with the band.

Visible Visible Visible Visible

取得或設定值,指出使用者是否能看見群組列。Gets or sets a value indicating whether the band is visible to the user.

方法

Clone() Clone() Clone() Clone()

建立與這個群組列完全相同的複本。Creates an exact copy of this band.

Dispose() Dispose() Dispose() Dispose()

釋放 DataGridViewBand 所使用的所有資源。Releases all resources used by the DataGridViewBand.

Dispose(Boolean) Dispose(Boolean) Dispose(Boolean) Dispose(Boolean)

釋放 DataGridViewBand 所使用的 Unmanaged 資源,並選擇性地釋放 Managed 資源。Releases the unmanaged resources used by the DataGridViewBand and optionally releases the managed resources.

Equals(Object) Equals(Object) Equals(Object) Equals(Object)

判斷指定的物件是否等於目前的物件。Determines whether the specified object is equal to the current object.

(Inherited from Object)
Finalize() Finalize() Finalize() Finalize()

釋出與這個群組列相關聯的資源。Releases the resources associated with the band.

GetHashCode() GetHashCode() GetHashCode() GetHashCode()

做為預設雜湊函式。Serves as the default hash function.

(Inherited from Object)
GetType() GetType() GetType() GetType()

取得目前執行個體的 TypeGets the Type of the current instance.

(Inherited from Object)
MemberwiseClone() MemberwiseClone() MemberwiseClone() MemberwiseClone()

建立目前 Object 的淺層複本 (Shallow Copy)。Creates a shallow copy of the current Object.

(Inherited from Object)
OnDataGridViewChanged() OnDataGridViewChanged() OnDataGridViewChanged() OnDataGridViewChanged()

當群組列與不同的 DataGridView 產生關聯時呼叫。Called when the band is associated with a different DataGridView.

RaiseCellClick(DataGridViewCellEventArgs) RaiseCellClick(DataGridViewCellEventArgs) RaiseCellClick(DataGridViewCellEventArgs) RaiseCellClick(DataGridViewCellEventArgs)

引發 CellClick 事件。Raises the CellClick event.

(Inherited from DataGridViewElement)
RaiseCellContentClick(DataGridViewCellEventArgs) RaiseCellContentClick(DataGridViewCellEventArgs) RaiseCellContentClick(DataGridViewCellEventArgs) RaiseCellContentClick(DataGridViewCellEventArgs)

引發 CellContentClick 事件。Raises the CellContentClick event.

(Inherited from DataGridViewElement)
RaiseCellContentDoubleClick(DataGridViewCellEventArgs) RaiseCellContentDoubleClick(DataGridViewCellEventArgs) RaiseCellContentDoubleClick(DataGridViewCellEventArgs) RaiseCellContentDoubleClick(DataGridViewCellEventArgs)

引發 CellContentDoubleClick 事件。Raises the CellContentDoubleClick event.

(Inherited from DataGridViewElement)
RaiseCellValueChanged(DataGridViewCellEventArgs) RaiseCellValueChanged(DataGridViewCellEventArgs) RaiseCellValueChanged(DataGridViewCellEventArgs) RaiseCellValueChanged(DataGridViewCellEventArgs)

引發 CellValueChanged 事件。Raises the CellValueChanged event.

(Inherited from DataGridViewElement)
RaiseDataError(DataGridViewDataErrorEventArgs) RaiseDataError(DataGridViewDataErrorEventArgs) RaiseDataError(DataGridViewDataErrorEventArgs) RaiseDataError(DataGridViewDataErrorEventArgs)

引發 DataError 事件。Raises the DataError event.

(Inherited from DataGridViewElement)
RaiseMouseWheel(MouseEventArgs) RaiseMouseWheel(MouseEventArgs) RaiseMouseWheel(MouseEventArgs) RaiseMouseWheel(MouseEventArgs)

引發 MouseWheel 事件。Raises the MouseWheel event.

(Inherited from DataGridViewElement)
ToString() ToString() ToString() ToString()

傳回字串,表示目前的群組列。Returns a string that represents the current band.

適用於

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