HtmlSelect.Size Property
Gets or sets the height (in rows) of the HtmlSelect control.
[Visual Basic] Public Property Size As Integer [C#] public int Size {get; set;} [C++] public: __property int get_Size(); public: __property void set_Size(int); [JScript] public function get Size() : int; public function set Size(int);
Property Value
The height (in rows) of the HtmlSelect control.
Remarks
Use the Size property to specify the height (in rows) of the HtmlSelect control. If you specify a size that is smaller than the number of items in the control, scroll bars are displayed to allow you to move up and down the list.
By default, the HtmlSelect control is displayed as a drop-down list box. If you allow multiple selections (by setting the Multiple property to true) or specify a height greater than one row (by setting the Size property to value greater that 1), the control is displayed as a list box.
Example
[Visual Basic, C#, JScript] The following example demonstrates how to use the Size property to specify the height (in rows) of the HtmlSelect control.
[Visual Basic] <%@ Page Language="VB" AutoEventWireup="True" %> <html> <head> <script runat="server"> Sub Button_Click (sender As Object, e As EventArgs) Dim i As Integer Label1.Text = "You selected:" For i = 0 to Select1.Items.Count - 1 If Select1.Items(i).Selected Then Label1.Text = Label1.Text & "<br> -" & Select1.Items(i).Text End If Next i Select1.Size = CInt(Select2.Value) End Sub Sub Check_Changed (sender As Object, e As EventArgs) Select1.Multiple = CheckBox1.Checked End Sub </script> </head> <body> <form runat="server"> <h3> HtmlSelect Example </h3> Select item(s) from the list: <br><br> <select id="Select1" Multiple="True" runat="server"> <option value="1"> Item 1 </option> <option value="2"> Item 2 </option> <option value="3"> Item 3 </option> <option value="4" Selected="True"> Item 4 </option> <option value="5"> Item 5 </option> <option value="6"> Item 6 </option> </select> <hr> HtmlSelect Size: <br> <select id="Select2" runat="server"> <option value="1" Selected="True"> 1 </option> <option value="2"> 2 </option> <option value="3"> 3 </option> <option value="4"> 4 </option> <option value="5"> 5 </option> <option value="6"> 6 </option> </select> <asp:CheckBox id="CheckBox1" Text="Enable Multiple Property" AutoPostBack="True" OnCheckedChanged="Check_Changed" Checked="True" runat="server"/> <br><br> <button id="Button1" OnServerClick="Button_Click" runat="server"> Submit </button> <br><br> <asp:Label id="Label1" runat="server"/> </form> </body> </html> [C#] <%@ Page Language="C#" AutoEventWireup="True" %> <html> <head> <script runat="server"> void Button_Click (Object sender, EventArgs e) { Label1.Text = "You selected:"; for (int i=0; i<=Select1.Items.Count - 1; i++) { if (Select1.Items[i].Selected) Label1.Text += "<br> -" + Select1.Items[i].Text; } Select1.Size = Convert.ToInt32(Select2.Value); } void Check_Changed (Object sender, EventArgs e) { Select1.Multiple = CheckBox1.Checked; } </script> </head> <body> <form runat="server"> <h3> HtmlSelect Example </h3> Select item(s) from the list: <br><br> <select id="Select1" Multiple="True" runat="server"> <option value="1" Selected="True"> Item 1 </option> <option value="2"> Item 2 </option> <option value="3"> Item 3 </option> <option value="4"> Item 4 </option> <option value="5"> Item 5 </option> <option value="6"> Item 6 </option> </select> <hr> HtmlSelect Size: <br> <select id="Select2" runat="server"> <option value="1"> 1 </option> <option value="2"> 2 </option> <option value="3"> 3 </option> <option value="4" Selected="True"> 4 </option> <option value="5"> 5 </option> <option value="6"> 6 </option> </select> <asp:CheckBox id="CheckBox1" Text="Enable Multiple Property" AutoPostBack="True" OnCheckedChanged="Check_Changed" Checked="True" runat="server"/> <br><br> <button id="Button1" OnServerClick="Button_Click" runat="server"> Submit </button> <br><br> <asp:Label id="Label1" runat="server"/> </form> </body> </html> [JScript] <%@ Page Language="JScript" AutoEventWireup="True" %> <html> <head> <script runat="server"> function Button_Click (sender: Object, e : EventArgs) : void { Label1.Text = "You selected:"; for (var i: int =0; i<=Select1.Items.Count - 1; i++) { if (Select1.Items[i].Selected) Label1.Text += "<br> -" + Select1.Items[i].Text; } Select1.Size = Convert.ToInt32(Select2.Value); } function Check_Changed (sender : Object, e : EventArgs) : void { Select1.Multiple = CheckBox1.Checked; } </script> </head> <body> <form runat="server"> <h3> HtmlSelect Example </h3> Select item(s) from the list: <br><br> <select id="Select1" Multiple="True" runat="server"> <option value="1" Selected="True"> Item 1 </option> <option value="2"> Item 2 </option> <option value="3"> Item 3 </option> <option value="4"> Item 4 </option> <option value="5"> Item 5 </option> <option value="6"> Item 6 </option> </select> <hr> HtmlSelect Size: <br> <select id="Select2" runat="server"> <option value="1"> 1 </option> <option value="2"> 2 </option> <option value="3"> 3 </option> <option value="4" Selected="True"> 4 </option> <option value="5"> 5 </option> <option value="6"> 6 </option> </select> <asp:CheckBox id="CheckBox1" Text="Enable Multiple Property" AutoPostBack="True" OnCheckedChanged="Check_Changed" Checked="True" runat="server"/> <br><br> <button id="Button1" OnServerClick="Button_Click" runat="server"> Submit </button> <br><br> <asp:Label id="Label1" runat="server"/> </form> </body> </html>
[C++] No example is available for C++. To view a Visual Basic, C#, or JScript example, click the Language Filter button
in the upper-left corner of the page.
Requirements
Platforms: Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 family
See Also
HtmlSelect Class | HtmlSelect Members | System.Web.UI.HtmlControls Namespace | Multiple