ListBox.Rows 属性

定义

获取或设置 ListBox 控件中显示的行数。Gets or sets the number of rows displayed in the ListBox control.

public:
 virtual property int Rows { int get(); void set(int value); };
[System.ComponentModel.Bindable(true)]
public virtual int Rows { get; set; }
public virtual int Rows { get; set; }
[<System.ComponentModel.Bindable(true)>]
member this.Rows : int with get, set
member this.Rows : int with get, set
Public Overridable Property Rows As Integer

属性值

Int32

ListBox 控件中显示的行数。The number of rows displayed in the ListBox control. 默认值是 4The default value is 4.

属性

例外

指定的行数小于 1 或大于 2000。The specified number of rows is less than one or greater than 2000.

示例

下面的示例演示如何使用 Rows 属性在控件中显示六行 ListBoxThe following example demonstrates how to use the Rows property to display six rows in the ListBox control.

<%@ Page Language="C#" AutoEventWireup="True" %>
<!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" >
<head>
    <title>ListBox Example</title>
<script language="C#" runat="server">

      void SubmitBtn_Click(Object sender, EventArgs e) 
      {
         if (ListBox1.SelectedIndex > -1)
            Label1.Text="You chose: " + ListBox1.SelectedItem.Text;
      }

   </script>

</head>
<body>

   <h3>ListBox Example</h3>

   <form id="form1" runat="server">

      <asp:ListBox id="ListBox1" 
           Rows="6"
           Width="100px"
           SelectionMode="Single" 
           runat="server">

         <asp:ListItem>Item 1</asp:ListItem>
         <asp:ListItem>Item 2</asp:ListItem>
         <asp:ListItem>Item 3</asp:ListItem>
         <asp:ListItem>Item 4</asp:ListItem>
         <asp:ListItem>Item 5</asp:ListItem>
         <asp:ListItem>Item 6</asp:ListItem>

      </asp:ListBox>

      <asp:button id="Button1"
           Text="Submit" 
           OnClick="SubmitBtn_Click" 
           runat="server" />
        
      <asp:Label id="Label1" 
           Font-Names="Verdana" 
           Font-Size="10pt" 
           runat="server"/>
        
   </form>

</body>
</html>

<%@ Page Language="VB" AutoEventWireup="True" %>
<!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" >
<head>
    <title>ListBox Example</title>
<script language="VB" runat="server">

      Sub SubmitBtn_Click(sender As Object, e As EventArgs) 
         If ListBox1.SelectedIndex > -1 Then
            Label1.Text = "You chose: " & ListBox1.SelectedItem.Text
         End If
      End Sub

   </script>

</head>
<body>

   <h3>ListBox Example</h3>

   <form id="form1" runat="server">

      <asp:ListBox id="ListBox1" 
           Rows="6"
           Width="100px"
           SelectionMode="Single" 
           runat="server">

         <asp:ListItem>Item 1</asp:ListItem>
         <asp:ListItem>Item 2</asp:ListItem>
         <asp:ListItem>Item 3</asp:ListItem>
         <asp:ListItem>Item 4</asp:ListItem>
         <asp:ListItem>Item 5</asp:ListItem>
         <asp:ListItem>Item 6</asp:ListItem>

      </asp:ListBox>

      <asp:button id="Button1"
           Text="Submit" 
           OnClick="SubmitBtn_Click" 
           runat="server" />
        
      <asp:Label id="Label1" 
           Font-Names="Verdana" 
           Font-Size="10pt" 
           runat="server"/>
        
   </form>

</body>
</html>

注解

使用 Rows 属性指定要在控件中显示的行数 ListBoxUse the Rows property to specify the number of rows to display in the ListBox control.

注意

行数必须介于1到2000之间。The number of rows must be between one and 2000. 此范围之外的值会引发异常。Values outside of this range will raise an exception.

属性的值 Rows 存储在视图状态中。The value of the Rows property is stored in view state.

适用于