DataGridColumnCollection.CopyTo(Array, Int32) Yöntem

Başvuru

Tanım

Ad Alanı:: System.Web.UI.WebControls

Bütünleştirilmiş Kod:: System.Web.dll

Önemli

Bazı bilgiler ürünün ön sürümüyle ilgilidir ve sürüm öncesinde önemli değişiklikler yapılmış olabilir. Burada verilen bilgilerle ilgili olarak Microsoft açık veya zımni hiçbir garanti vermez.

öğeleri koleksiyonundan DataGridColumnCollection belirtilen dizininden başlayarak belirtilen Arraydizinine Arraykopyalar.

public:
 virtual void CopyTo(Array ^ array, int index);

public void CopyTo (Array array, int index);

abstract member CopyTo : Array * int -> unit
override this.CopyTo : Array * int -> unit

Public Sub CopyTo (array As Array, index As Integer)

Parametreler

array: Array

öğesinden DataGridColumnCollectionkopyalanan öğeleri alan sıfır tabanlı Array bir.

index: Int32

Kopyalanan içeriği almak için belirtilen Array ilk konum.

Uygulamalar

CopyTo(Array, Int32)

Özel durumlar

ArgumentNullException

array, null değeridir.

Örnekler

Aşağıdaki kod örneği, koleksiyonun CopyTo içeriğini DataGridColumnCollection bir nesne dizisine kopyalamak için yönteminin DataGridColumn nasıl kullanılacağını gösterir.

<%@ 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 language="C#" 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) 
      {
       
         DataGridColumn[] myArray = new DataGridColumn[3];

         ItemsGrid.Columns.CopyTo(myArray, 0);

         Label1.Text = "The heading text for the items in the array are: <br /><br />";

         foreach (DataGridColumn column in myArray) 
         {
          
            Label1.Text += column.HeaderText + "<br />";
 
         }

      } 
   
   </script>
 
<head runat="server">
    <title>DataGridColumnCollection CopyTo Example</title>
</head>
<body>
 
   <form id="form1" runat="server">
 
      <h3>DataGridColumnCollection CopyTo Example</h3>
 
      <b>Product List</b>
 
      <asp:DataGrid id="ItemsGrid"
           BorderColor="black"
           BorderWidth="1"
           CellPadding="3"
           AutoGenerateColumns="false"
           runat="server">

         <HeaderStyle BackColor="#00aaaa">
         </HeaderStyle>
 
         <Columns>
                  
            <asp:BoundColumn 
                 HeaderText="Item Number" 
                 DataField="IntegerValue"/>
 
            <asp:BoundColumn 
                 HeaderText="Item" 
                 DataField="StringValue"/>
 
            <asp:BoundColumn 
                 HeaderText="Price" 
                 DataField="CurrencyValue" 
                 DataFormatString="{0:c}">

               <ItemStyle HorizontalAlign="right">
               </ItemStyle>

            </asp:BoundColumn>
 
         </Columns>
   
      </asp:DataGrid>

      <br />

      <asp:Button id="Button1"
           Text="Copy DataGridColumnsCollection to Array"
           OnClick="Button_Click"
           runat="server"/>

      <br />

      <asp:Label id="Label1"
           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 language="VB" runat="server">
 
        Function CreateDataSource() As ICollection
            Dim dt As New DataTable()
            Dim dr As DataRow
            
            dt.Columns.Add(New DataColumn("IntegerValue", GetType(Int32)))
            dt.Columns.Add(New DataColumn("StringValue", GetType(String)))
            dt.Columns.Add(New DataColumn("CurrencyValue", GetType(Double)))
            
            Dim i As Integer
            For i = 0 To 8
                dr = dt.NewRow()
                
                dr(0) = i
                dr(1) = "Item " & i.ToString()
                dr(2) = 1.23 *(i + 1)
                
                dt.Rows.Add(dr)
            Next i
            
            Dim dv As New DataView(dt)
            Return dv
        End Function 'CreateDataSource


        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 'Page_Load
         

        Sub Button_Click(sender As Object, e As EventArgs)
            
            Dim myArray(3) As DataGridColumn
            
            ItemsGrid.Columns.CopyTo(myArray, 0)
            
            Label1.Text = "The heading text for the items in the array are: " & "<br />" & "<br />"
            
            Dim column As DataGridColumn
            For Each column In  myArray
                Label1.Text &= column.HeaderText & "<br />"
            Next column 
        End Sub 'Button_Click
   </script>
 
<head runat="server">
    <title>DataGridColumnCollection CopyTo Example</title>
</head>
<body>
 
   <form id="form1" runat="server">
 
      <h3>DataGridColumnCollection CopyTo Example</h3>
 
      <b>Product List</b>
 
      <asp:DataGrid id="ItemsGrid"
           BorderColor="black"
           BorderWidth="1"
           CellPadding="3"
           AutoGenerateColumns="false"
           runat="server">

         <HeaderStyle BackColor="#00aaaa">
         </HeaderStyle>
 
         <Columns>
                  
            <asp:BoundColumn 
                 HeaderText="Item Number" 
                 DataField="IntegerValue"/>
 
            <asp:BoundColumn 
                 HeaderText="Item" 
                 DataField="StringValue"/>
 
            <asp:BoundColumn 
                 HeaderText="Price" 
                 DataField="CurrencyValue" 
                 DataFormatString="{0:c}">

               <ItemStyle HorizontalAlign="right">
               </ItemStyle>

            </asp:BoundColumn>
 
         </Columns>
   
      </asp:DataGrid>

      <br />

      <asp:Button id="Button1"
           Text="Copy DataGridColumnsCollection to Array"
           OnClick="Button_Click"
           runat="server"/>

      <br />

      <asp:Label id="Label1"
           runat="server"/>    
 
   </form>
 
</body>
</html>

Açıklamalar

Koleksiyonun DataGridColumnCollection içeriğini belirtilen dizinden başlayarak belirtilen System.Arraydizinine kopyalamak için bu yöntemi kullanın.

Not

array parametresi sıfır tabanlı System.Arrayolmalıdır.

Şunlara uygulanır

Ayrıca bkz.

Array

Aracılığıyla paylaş