HtmlSelect.Name プロパティ
アセンブリ: System.Web (system.web.dll 内)

HtmlSelect コントロールに関連付けられた一意の識別名。

Name プロパティを使用して、HtmlSelect コントロールの一意の識別名を確認します。この実装では、get アクセサは Control.UniqueID プロパティの値を返します。ただし、set アクセサはこのプロパティに値を代入しません。
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set アクセサがこのプロパティに値を代入しません。Name プロパティと Control.UniqueID プロパティが同じ値を持っていないと、HtmlSelect コントロールが正しく動作しないためです。 |

HtmlSelect コントロールの Name プロパティを使用して、Items リストの特定の項目を選択する方法を次のコード例に示します。
<%@ Page Language="VB" AutoEventWireup="True" %> <%@ Import Namespace="System.Data" %> <html> <script runat="server" > Sub Page_Load(sender as Object, e As EventArgs) ' Bind a data source to the Repeater control. Repeater1.DataSource = CreateRepeaterSource() Repeater1.DataBind() End Sub Sub Item_Bound(sender As Object, e As RepeaterItemEventArgs) ' Each item in the Repeater control contains an HtmlSelect ' control. This method binds a data source to the HtmlSelect ' control as each item in the Repeater control is being ' bound to data. ' The ItemDataBound event is raised when data is bound to an ' item in the Repeater control. Items can include the Header , ' Footer, and so on. Use the following logic only if the item ' being bound is an Item or AlternatingItem. If (e.Item.ItemType = ListItemType.Item) Or _ (e.Item.ItemType = ListItemType.AlternatingItem) Then ' Bind a data source to the HtmlSelect control. Dim selectControl As HtmlSelect = _ CType(e.Item.FindControl("Select1"), HtmlSelect) selectControl.DataSource = CreateHtmlSelectSource() selectControl.DataBind() ' The runtime automatically generates a unique identifier ' for each control embedded in a list control, such as the ' Repeater. The Name property of the HtmlSelect control ' contains this unique identifier and is commonly used ' to identify a specific control. ' Select the last item in the HtmlSelect control if the Name ' property contains the value "Repeater1:_ctl3:Select1". If selectControl.Name = "Repeater1:_ctl3:Select1" Then selectControl.SelectedIndex = selectControl.Items.Count - 1 End If End If End Sub Function CreateHtmlSelectSource() As DataView ' Create a DataTable that contains sample data for the ' HtmlSelect controls. Dim dt As DataTable = New DataTable() Dim dr As DataRow dt.Columns.Add(New DataColumn("Text", GetType(String))) dt.Columns.Add(New DataColumn("Value", GetType(String))) ' Populate the DataTable with sample values. Dim i As Integer For i = 0 To 4 dr = dt.NewRow() dr(0) = "Item " & i.ToString() dr(1) = i.ToString() dt.Rows.Add(dr) Next i ' Create a DataView from the DataTable. Dim dv As DataView = New DataView(dt) Return dv End Function Function CreateRepeaterSource() As DataView ' Create a DataTable that contains sample data for the ' Repeater control. Dim dt As DataTable = New DataTable() Dim dr As DataRow dt.Columns.Add(new DataColumn("Category", GetType(String))) ' Populate the DataTable with sample values. Dim i As Integer For i = 0 To 4 dr = dt.NewRow() dr(0) = "Category " & i.ToString() dt.Rows.Add(dr) Next i ' Create a DataView from the DataTable. Dim dv As DataView = new DataView(dt) return dv End Function </script> <body> <form runat="server"> <h3> HtmlSelect Name Example </h3> Notice that Category 3 has a different item selected by default. <br> <asp:Repeater id="Repeater1" OnItemDataBound="Item_Bound" runat="server"> <ItemTemplate> <h4><%# DataBinder.Eval(Container.DataItem, "Category") %></h4> Select Item: <br> <select id="Select1" DataTextField="Text" DataValueField="Value" runat="server"/> <br><br> <hr> </ItemTemplate> </asp:Repeater> </form> </body> </html>
<%@ Page Language="C#" AutoEventWireup="True" %> <%@ Import Namespace="System.Data" %> <html> <script runat="server" > void Page_Load(Object sender, EventArgs e) { // Bind a data source to the Repeater control. Repeater1.DataSource = CreateRepeaterSource(); Repeater1.DataBind(); } void Item_Bound(Object sender, RepeaterItemEventArgs e) { // Each item in the Repeater control contains an HtmlSelect // control. This method binds a data source to the HtmlSelect // control as each item in the Repeater control is being // bound to data. // The ItemDataBound event is raised when data is bound to an // item in the Repeater control. Items can include the Header, // Footer, and so on. Use the following logic only if the item // being bound is an Item or AlternatingItem. if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem) { // Bind a data source to the HtmlSelect control. HtmlSelect selectControl = (HtmlSelect)e.Item.FindControl("Select1"); selectControl.DataSource = CreateHtmlSelectSource(); selectControl.DataBind(); // The runtime automatically generates a unique identifier // for each control embedded in a list control, such as the // Repeater. The Name property of the HtmlSelect control // contains this unique identifier and is commonly used // to identify a specific control. // Select the last item in the HtmlSelect control if the Name // property contains the value "Repeater1:_ctl3:Select1". if(selectControl.Name == "Repeater1:_ctl3:Select1") { selectControl.SelectedIndex = selectControl.Items.Count - 1; } } } DataView CreateHtmlSelectSource() { // Create a DataTable that contains sample data for the // HtmlSelect controls. DataTable dt = new DataTable(); DataRow dr; dt.Columns.Add(new DataColumn("Text", typeof(String))); dt.Columns.Add(new DataColumn("Value", typeof(String))); // Populate the DataTable with sample values. for (int i = 0; i < 5; i++) { dr = dt.NewRow(); dr[0] = "Item " + i.ToString(); dr[1] = i.ToString(); dt.Rows.Add(dr); } // Create a DataView from the DataTable. DataView dv = new DataView(dt); return dv; } DataView CreateRepeaterSource() { // Create a DataTable that contains sample data for the // Repeater control. DataTable dt = new DataTable(); DataRow dr; dt.Columns.Add(new DataColumn("Category", typeof(String))); // Populate the DataTable with sample values. for (int i = 0; i < 5; i++) { dr = dt.NewRow(); dr[0] = "Category " + i.ToString(); dt.Rows.Add(dr); } // Create a DataView from the DataTable. DataView dv = new DataView(dt); return dv; } </script> <body> <form runat="server"> <h3> HtmlSelect Name Example </h3> Notice that Category 3 has a different item selected by default. <br> <asp:Repeater id="Repeater1" OnItemDataBound="Item_Bound" runat="server"> <ItemTemplate> <h4><%# DataBinder.Eval(Container.DataItem, "Category") %></h4> Select Item: <br> <select id="Select1" DataTextField="Text" DataValueField="Value" runat="server"/> <br><br> <hr> </ItemTemplate> </asp:Repeater> </form> </body> </html>

Windows 98, Windows 2000 SP4, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition
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