WebControl.MergeStyle(Style) 方法

定义

将指定样式的所有非空白元素复制到 Web 控件,但不覆盖该控件现有的任何样式元素。Copies any nonblank elements of the specified style to the Web control, but will not overwrite any existing style elements of the control. 此方法主要由控件开发人员使用。This method is used primarily by control developers.

public:
 void MergeStyle(System::Web::UI::WebControls::Style ^ s);
public void MergeStyle (System.Web.UI.WebControls.Style s);
member this.MergeStyle : System.Web.UI.WebControls.Style -> unit
Public Sub MergeStyle (s As Style)

参数

s
Style

Style,表示要复制的样式。A Style that represents the style to be copied.

示例

下面的示例演示如何使用MergeStyle方法来合并样式与DataGrid控件的样式。The following example demonstrates how to use the MergeStyle method to merge a style with the style of a DataGrid control.

备注

下面的代码示例使用单文件代码模型,如果直接复制到代码隐藏文件中,则可能无法正常工作。The following code sample uses the single-file code model and may not work correctly if copied directly into a code-behind file. 必须将此代码示例复制到扩展名为 .aspx 的空文本文件中。This code sample must be copied into an empty text file that has an .aspx extension. 有关 Web 窗体代码模型的详细信息,请参阅ASP.NET Web 窗体页代码模型For more information on the Web Forms code model, see ASP.NET Web Forms Page Code Model.


<%@ Page Language="C#" AutoEventWireup="True" %>

<%@ Import Namespace="System.Data" %>
 
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
   <script runat="server">
 
      ICollection CreateDataSource() 
      {
         DataTable dt = new DataTable();
         DataRow dr;
 
         dt.Columns.Add(new DataColumn("IntegerValue", typeof(Int32)));
         dt.Columns.Add(new DataColumn("StringValue", typeof(string)));
         dt.Columns.Add(new DataColumn("CurrencyValue", typeof(double)));
 
         for (int i = 0; i < 9; i++) 
         {
            dr = dt.NewRow();
 
            dr[0] = i;
            dr[1] = "Item " + i.ToString();
            dr[2] = 1.23 * (i + 1);
 
            dt.Rows.Add(dr);
         }
 
         DataView dv = new DataView(dt);
         return dv;
      }
 
      void Page_Load(Object sender, EventArgs e) 
      {
         if (!IsPostBack) 
         {
            // Load this data only once.
            ItemsGrid.DataSource= CreateDataSource();
            ItemsGrid.DataBind();
         }
      }

      void Button_Click(Object sender, EventArgs e) 
      {
         Style myStyle = new Style();
         myStyle.ForeColor = System.Drawing.Color.Red;
      
         ItemsGrid.MergeStyle(myStyle);
      }
 
   </script>
 
<head runat="server">
    <title>WebControl MergeStyle Example</title>
</head>
<body>
 
   <form id="form1" runat="server">
 
      <h3>WebControl MergeStyle Example</h3>
 
      <b>Product List</b>
 
      <asp:DataGrid id="ItemsGrid"
           BorderColor="black"
           BorderWidth="1"
           BackColor="Yellow"
           CellPadding="3"
           AutoGenerateColumns="false"
           runat="server">

         <HeaderStyle BackColor="#00aaaa">
         </HeaderStyle>

         <Columns>

            <asp:BoundColumn
                 HeaderText="Number" 
                 DataField="IntegerValue">
            </asp:BoundColumn>

            <asp:BoundColumn
                 HeaderText="Description" 
                 DataField="StringValue">
            </asp:BoundColumn>

            <asp:BoundColumn
                 HeaderText="Price" 
                 DataField="CurrencyValue" 
                 DataFormatString="{0:c}">
            </asp:BoundColumn>

         </Columns>
 
      </asp:DataGrid>

      <br /><br />

      <asp:Button id="Button1" 
           Text="Merge Custom Style"
           OnClick="Button_Click"
           runat="server"/>
 
   </form>
 
</body>
</html>


<%@ Page Language="VB" AutoEventWireup="True" %>

<%@ Import Namespace="System.Data" %>
 
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
   <script runat="server">
 
      Private Function CreateDataSource() As ICollection 
      
         Dim dt As DataTable = New DataTable
         Dim dr As DataRow
         Dim dv As DataView
         Dim i As Integer
 
         dt.Columns.Add(New DataColumn("IntegerValue", GetType(Integer)))
         dt.Columns.Add(New DataColumn("StringValue", GetType(String)))
         dt.Columns.Add(New DataColumn("CurrencyValue", GetType(Double)))
 
         for i = 0 to 9  
         
            dr = dt.NewRow()
 
            dr(0) = i
            dr(1) = "Item " + i.ToString()
            dr(2) = 1.23 * (i + 1)
 
            dt.Rows.Add(dr)

         next i
 
         dv = New DataView(dt)
         CreateDataSource = dv

      End Function
 
      Private Sub Page_Load(sender As Object, e As EventArgs) 
      
         If Not IsPostBack Then 
            ' Load this data only once.
            ItemsGrid.DataSource = CreateDataSource()
            ItemsGrid.DataBind()
         End If

      End Sub

      Private Sub Button_Click(sender As Object, e As EventArgs) 
    
         Dim myStyle As Style = new Style()
         myStyle.ForeColor = System.Drawing.Color.Red
      
         ItemsGrid.MergeStyle(myStyle)

      End Sub
 
   </script>
 
<head runat="server">
    <title>WebControl MergeStyle Example</title>
</head>
<body>
 
   <form id="form1" runat="server">
 
      <h3>WebControl MergeStyle Example</h3>
 
      <b>Product List</b>
 
      <asp:DataGrid id="ItemsGrid"
           BorderColor="black"
           BorderWidth="1"
           BackColor="Yellow"
           CellPadding="3"
           AutoGenerateColumns="false"
           runat="server">

         <HeaderStyle BackColor="#00aaaa">
         </HeaderStyle>

         <Columns>

            <asp:BoundColumn
                 HeaderText="Number" 
                 DataField="IntegerValue">
            </asp:BoundColumn>

            <asp:BoundColumn
                 HeaderText="Description" 
                 DataField="StringValue">
            </asp:BoundColumn>

            <asp:BoundColumn
                 HeaderText="Price" 
                 DataField="CurrencyValue" 
                 DataFormatString="{0:c}">
            </asp:BoundColumn>

         </Columns>
 
      </asp:DataGrid>

      <br /><br />

      <asp:Button id="Button1" 
           Text="Merge Custom Style"
           OnClick="Button_Click"
           runat="server"/>
 
   </form>
 
</body>
</html>

适用于

另请参阅