DataGridTableStyle.MappingName DataGridTableStyle.MappingName DataGridTableStyle.MappingName DataGridTableStyle.MappingName Property

定义

获取或设置用于将此表映射到特定数据源的名称。Gets or sets the name used to map this table to a specific data source.

public:
 property System::String ^ MappingName { System::String ^ get(); void set(System::String ^ value); };
public string MappingName { get; set; }
member this.MappingName : string with get, set
Public Property MappingName As String

属性值

用于将此网格映射到特定数据源的名称。The name used to map this grid to a specific data source.

示例

下面的代码示例创建一个 @no__t 为0的对象数组,并将 @no__t 控件绑定到数组。The following code example creates an array of Widget objects and binds a System.Windows.Forms.DataGrid control to the array. 然后,该代码创建一个 DataGridTableStyle,并将 @no__t 设置为类的名称加上括号。The code then creates a DataGridTableStyle and sets the MappingName to the name of the class plus brackets.


    void BindToArray()
    {
        // Create an array of Machine objects (defined below).
        array<Machine^>^ Machines = gcnew array<Machine^>(3);
        Machine^ tempMachine;

        tempMachine = gcnew Machine();
        tempMachine->Model = "AAA";
        tempMachine->Id = "A100";
        tempMachine->Price = Convert::ToDecimal(3.80);
        Machines[0] = tempMachine;

        // The first Machine includes an array of Part objects.
        Part^ p1 = gcnew Part();
        p1->PartId = "PartX";
        Part^ p2 = gcnew Part();
        p2->PartId = "PartY";

        // Note that the Machines.Parts property returns an ArrayList.
        // Add the parts to the ArrayList using the AddRange method.
        tempMachine->Parts->AddRange(gcnew array<Part^> {p1, p2}); 

        tempMachine = gcnew Machine();
        tempMachine->Model = "BBB";
        tempMachine->Id = "B100";
        tempMachine->Price = Convert::ToDecimal(1.52);
        Machines[1] = tempMachine;

        tempMachine = gcnew Machine();
        tempMachine->Id = "CCC";
        tempMachine->Model = "B100";
        tempMachine->Price = Convert::ToDecimal(2.14);
        Machines[2] = tempMachine;

        bindedDataGrid->SetDataBinding(Machines, "");
        CreateTableStyle();
    }

    void CreateTableStyle()
    {
        // Creates two DataGridTableStyle objects, one for the Machine
        // array, and one for the Parts ArrayList.

        DataGridTableStyle^ machineTable = gcnew DataGridTableStyle();
        // Sets the MappingName to the class name plus brackets.
        machineTable->MappingName = "Machine[]";

        // Sets the AlternatingBackColor so you can see the difference.
        machineTable->AlternatingBackColor = 
            System::Drawing::Color::LightBlue;

        // Creates three column styles.
        DataGridTextBoxColumn^ modelColumn = gcnew DataGridTextBoxColumn();
        modelColumn->MappingName = "Model";
        modelColumn->HeaderText = "Model";

        DataGridTextBoxColumn^ idColumn = gcnew DataGridTextBoxColumn();
        idColumn->MappingName = "Id";
        idColumn->HeaderText = "Id";

        DataGridTextBoxColumn^ priceColumn = gcnew DataGridTextBoxColumn();
        priceColumn->MappingName = "Price";
        priceColumn->HeaderText = "Price";
        priceColumn->Format = "c";

        // Adds the column styles to the grid table style.
        machineTable->GridColumnStyles->Add(modelColumn);
        machineTable->GridColumnStyles->Add(idColumn);
        machineTable->GridColumnStyles->Add(priceColumn);

        // Add the table style to the collection, but clear the
        // collection first.
        bindedDataGrid->TableStyles->Clear();
        bindedDataGrid->TableStyles->Add(machineTable);

        // Create another table style, one for the related data.
        DataGridTableStyle^ partsTable = gcnew DataGridTableStyle();
        // Set the MappingName to an ArrayList. Note that you need not
        // include brackets.
        partsTable->MappingName = "ArrayList";
        DataGridTextBoxColumn^ partIdColumn = 
            gcnew DataGridTextBoxColumn();
        partIdColumn->MappingName = "PartID";
        partIdColumn->HeaderText = "Part ID";
        partsTable->GridColumnStyles->Add(partIdColumn);
        bindedDataGrid->TableStyles->Add(partsTable);
    }

private:
    ref class Machine
    {
    private:
        String^ machineModel;
        String^ machineID;
        Decimal machinePrice;

        // Use an ArrayList to create a related collection.
        ArrayList^ machineParts;

    public:
        Machine()
        {
            machineParts = gcnew ArrayList; 
        }   

        property String^ Model
        {
            String^ get()
            {
                return machineModel;
            }
            void set(String^ value)
            {
                machineModel = value;
            }
        }

        property String^ Id
        {
            String^ get()
            {
                return machineID;
            }
            void set(String^ value)
            {
                machineID = value;
            }
        }

        property ArrayList^ Parts
        {
            ArrayList^ get()
            {
                return machineParts;
            }
            void set(ArrayList^ value)
            {
                machineParts = value;
            }
        }

        property Decimal Price
        {
            Decimal get()
            {
                return machinePrice;
            }
            void set(Decimal value)
            {
                machinePrice = value;
            }
        }
    };

private:
    ref class Part
    {
    private:
        String^ partId;

    public:
        property String^ PartId
        {
            String^ get()
            {
                return partId;
            }
            void set(String^ value)
            {
                partId = value;
            }
        }
    };

    private void BindToArray()
    {
        // Create an array of Machine objects (defined below).
        Machine[] Machines = new Machine[3];
        Machine tempMachine;

        tempMachine= new Machine();
        tempMachine.Model = "AAA";
        tempMachine.Id= "A100";
        tempMachine.Price= Convert.ToDecimal(3.80);
        Machines[0]=tempMachine;

        // The first Machine includes an array of Part objects.
        Part p1 = new Part();
        p1.PartId= "PartX";
        Part p2 = new Part();
        p2.PartId= "PartY";

        // Note that the Machines.Parts property returns an ArrayList.
        // Add the parts to the ArrayList using the AddRange method.
        tempMachine.Parts.AddRange (new Part[]{p1, p2});;

        tempMachine= new Machine();
        tempMachine.Model = "BBB";
        tempMachine.Id= "B100";
        tempMachine.Price= Convert.ToDecimal(1.52);
        Machines[1]=tempMachine;

        tempMachine= new Machine();
        tempMachine.Id= "CCC";
        tempMachine.Model = "B100";
        tempMachine.Price= Convert.ToDecimal(2.14);
        Machines[2]=tempMachine;

        dataGrid1.SetDataBinding(Machines, "");
        CreateTableStyle();
    }

    private void CreateTableStyle()
    {
        // Creates two DataGridTableStyle objects, one for the Machine
        // array, and one for the Parts ArrayList.

        DataGridTableStyle MachineTable = new DataGridTableStyle();
        // Sets the MappingName to the class name plus brackets.    
        MachineTable.MappingName= "Machine[]";

        // Sets the AlternatingBackColor so you can see the difference.
        MachineTable.AlternatingBackColor= System.Drawing.Color.LightBlue;

        // Creates three column styles.
        DataGridTextBoxColumn modelColumn = new DataGridTextBoxColumn();
        modelColumn.MappingName= "Model";
        modelColumn.HeaderText= "Model";

        DataGridTextBoxColumn IdColumn = new DataGridTextBoxColumn();
        IdColumn.MappingName= "Id";
        IdColumn.HeaderText= "Id";

        DataGridTextBoxColumn priceColumn = new DataGridTextBoxColumn();
        priceColumn.MappingName= "Price";
        priceColumn.HeaderText= "Price";
        priceColumn.Format = "c";

        // Adds the column styles to the grid table style.
        MachineTable.GridColumnStyles.Add(modelColumn);
        MachineTable.GridColumnStyles.Add(IdColumn);
        MachineTable.GridColumnStyles.Add(priceColumn);

        // Add the table style to the collection, but clear the 
        // collection first.
        dataGrid1.TableStyles.Clear();
        dataGrid1.TableStyles.Add(MachineTable);

        // Create another table style, one for the related data.
        DataGridTableStyle partsTable = new DataGridTableStyle();
        // Set the MappingName to an ArrayList. Note that you need not 
        // include brackets.
        partsTable.MappingName= "ArrayList";
        DataGridTextBoxColumn partIdColumn = new DataGridTextBoxColumn();
        partIdColumn.MappingName= "PartID";
        partIdColumn.HeaderText = "Part ID";
        partsTable.GridColumnStyles.Add(partIdColumn);

        dataGrid1.TableStyles.Add(partsTable);

    }
    public class Machine
    {
        private string model;
        private string id;
        private decimal price;

        // Use an ArrayList to create a related collection.
        private ArrayList parts = new ArrayList();
    
        public string Model
        {
            get{return model;}
            set{model=value;}
        }
        public string Id
        {
            get{return id;}
            set{id = value;}
        }
        public ArrayList Parts
        {
            get{return parts;}
            set{parts = value;}
        }

        public decimal Price
        {
            get{return price;}
            set{price = value;}
        }
    }

    public class Part
    {
        private string partId;
    
        public string PartId
        {
            get{return partId;}
            set{partId = value;}
        }
    }
Sub BindToArray()
    ' Creates an array of Widget objects (defined below).
    Dim Widgets(2) As Widget
    Dim tempWidget As Widget

    tempWidget = New Widget()
    tempWidget.Model = "AAA"
    tempWidget.Id = "A100"
    tempWidget.Price = Convert.ToDecimal(3.8)
    Widgets(0) = tempWidget

    ' The first Widget includes an array of Part objects.
    Dim p1 As New Part()
    p1.PartId = "PartX"
    Dim p2 As New Part()
    p2.PartId = "PartY"

    ' Note that the Widgets.Parts property returns an ArrayList.
    ' Add the parts to the ArrayList using the AddRange method.
    tempWidget.Parts.AddRange(New Part() {p1, p2})

    tempWidget = New Widget()
    tempWidget.Model = "BBB"
    tempWidget.Id = "B100"
    tempWidget.Price = Convert.ToDecimal(1.52)
    Widgets(1) = tempWidget

    tempWidget = New Widget()
    tempWidget.Id = "CCC"
    tempWidget.Model = "B100"
    tempWidget.Price = Convert.ToDecimal(2.14)
    Widgets(2) = tempWidget

    DataGrid1.SetDataBinding(Widgets, "")
    CreateTableStyle()
End Sub


Private Sub CreateTableStyle()
    ' Creates two DataGridTableStyle objects, one for the Widget
    ' array, and one for the Parts ArrayList.
    Dim widgetTable As New DataGridTableStyle()
    ' Sets the MappingName to the class name plus brackets.    
    widgetTable.MappingName = "Widget[]"

    ' Sets the AlternatingBackColor so you can see the difference.
    widgetTable.AlternatingBackColor = System.Drawing.Color.LightBlue

    ' Creates three column styles.
    Dim modelColumn As New DataGridTextBoxColumn()
    modelColumn.MappingName = "Model"
    modelColumn.HeaderText = "Model"

    Dim IdColumn As New DataGridTextBoxColumn()
    IdColumn.MappingName = "Id"
    IdColumn.HeaderText = "Id"

    Dim priceColumn As New DataGridTextBoxColumn()
    priceColumn.MappingName = "Price"
    priceColumn.HeaderText = "Price"
    priceColumn.Format = "c"

    ' Adds the column styles to the grid table style.
    widgetTable.GridColumnStyles.Add(modelColumn)
    widgetTable.GridColumnStyles.Add(IdColumn)
    widgetTable.GridColumnStyles.Add(priceColumn)

    ' Add the table style to the collection, but clear the 
    ' collection first.
    DataGrid1.TableStyles.Clear()
    DataGrid1.TableStyles.Add(widgetTable)

    ' Create another table style, one for the related data.
    Dim partsTable As New DataGridTableStyle()
    ' Set the MappingName to an ArrayList. Note that you need not 
    ' include brackets.
    partsTable.MappingName = "ArrayList"
    Dim partIdColumn As New DataGridTextBoxColumn()
    partIdColumn.MappingName = "PartID"
    partIdColumn.HeaderText = "Part ID"
    partsTable.GridColumnStyles.Add(partIdColumn)

    DataGrid1.TableStyles.Add(partsTable)
End Sub


Public Class Widget
    Private myModel As String
    Private myId As String
    Private myPrice As Decimal

    ' Use an ArrayList to create a related collection.
    Private myParts As New ArrayList()

    Public Property Model() As String
        Get
            Return myModel
        End Get
        Set(ByVal Value As String)
            myModel = Value
        End Set
    End Property

    Public Property Id() As String
        Get
            Return myId
        End Get
        Set(ByVal Value As String)
            myId = Value
        End Set
    End Property

    Public Property Parts() As ArrayList
        Get
            Return myParts
        End Get
        Set(ByVal Value As ArrayList)
            myParts = Value
        End Set
    End Property

    Public Property Price() As Decimal
        Get
            Return myPrice
        End Get
        Set(ByVal Value As Decimal)
            myPrice = Value
        End Set
    End Property
End Class


Public Class Part
    Private myPartId As String


    Public Property PartId() As String
        Get
            Return myPartId
        End Get
        Set(ByVal Value As String)
            myPartId = Value
        End Set
    End Property
End Class

注解

若要将 DataGrid 绑定到对象的强类型数组,对象类型必须包含公共属性。To bind the DataGrid to a strongly typed array of objects, the object type must contain public properties. 若要创建显示数组的 @no__t 0,请将 @no__t 属性设置为 typename,其中 typename 替换为对象类型的名称。To create a DataGridTableStyle that displays the array, set the DataGridTableStyle.MappingName property to typename where typename is replaced by the name of the object type. 另请注意,MappingName 属性区分大小写;类型名称必须完全匹配。Also note that the MappingName property is case-sensitive; the type name must be matched exactly. 有关示例,请参阅 MappingName 属性。See the MappingName property for an example.

你还可以将 DataGrid 绑定到 @no__t。You can also bind the DataGrid to an ArrayList. @No__t 的一项功能是它可以包含多种类型的对象,但如果列表中的所有项的类型与第一个项的类型相同,则 DataGrid 只能绑定到此类列表。A feature of the ArrayList is that it can contain objects of multiple types, but the DataGrid can only bind to such a list when all items in the list are of the same type as the first item. 这意味着所有对象的类型必须相同,或者必须从列表中的第一项继承同一个类。This means that all objects must either be of the same type, or they must inherit from the same class as the first item in the list. 例如,如果列表中的第一项为 Control,则第二项可以是 TextBox (从 @no__t 继承)。For example, if the first item in a list is a Control, the second item could be a TextBox (which inherits from Control). 另一方面,如果第一项为 TextBox,则第二个对象不能为 ControlIf, on the other hand, the first item is a TextBox, the second object cannot be a Control. 此外,当绑定时,@no__t 0 中必须有项。Further, the ArrayList must have items in it when it is bound. 空的 ArrayList 将导致空网格。An empty ArrayList will result in an empty grid. 绑定到 ArrayList 时,请将 DataGridTableStyle 的 @no__t 设置为 "ArrayList" (类型名称)。When binding to an ArrayList, set the MappingName of the DataGridTableStyle to "ArrayList" (the type name).

默认值为此网格的 CurrencyManager 所管理的列表的名称。The default is the name of the list managed by the CurrencyManager for this grid. 使用 @no__t 2 构造函数设置 @no__t 的 @no__t 0。The CurrencyManager for the DataGridTableStyle is set using the DataGridTableStyle constructor.

当 @no__t 值更改时,将发生 @no__t 0 事件。The MappingNameChanged event occurs when the MappingName value changes.

适用于

另请参阅