CheckBoxList.CellSpacing Property
Definition
Important
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Gets or sets the distance (in pixels) between cells.
public:
virtual property int CellSpacing { int get(); void set(int value); };[System.ComponentModel.Bindable(true)]
public virtual int CellSpacing { get; set; }public virtual int CellSpacing { get; set; }[<System.ComponentModel.Bindable(true)>]
member this.CellSpacing : int with get, setmember this.CellSpacing : int with get, setPublic Overridable Property CellSpacing As IntegerProperty Value
The distance (in pixels) between cells. The default is -1, which indicates that this property is not set.
- Attributes
Examples
The following code example demonstrates how to use the CellSpacing property to specify that the cell spacing for the CheckBoxList control is 5 pixels.
Note
The following code samples use the single-file code model and may not work correctly if copied directly into a code-behind file. Each code sample must be copied into an empty text file that has an .aspx extension. For more information on the Web Forms code model, see ASP.NET Web Forms Page Code Model.
<%@ 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>CheckBoxList Example</title>
<script language="C#" runat="server">
void Check_Clicked(Object sender, EventArgs e)
{
Message.Text = "Selected Item(s):<br /><br />";
for (int i = 0; i < CheckBoxList1.Items.Count; i++)
{
if (CheckBoxList1.Items[i].Selected)
Message.Text += CheckBoxList1.Items[i].Text + "<br />";
}
}
</script>
</head>
<body>
<form id="form1" action="CheckBoxList.aspx" method="post" runat="server">
<h3>CheckBoxList Example</h3>
<asp:CheckBoxList id="CheckBoxList1"
AutoPostBack="True"
CellPadding="5"
CellSpacing="5"
RepeatColumns="2"
RepeatDirection="Vertical"
RepeatLayout="Flow"
TextAlign="Right"
OnSelectedIndexChanged="Check_Clicked"
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:CheckBoxList>
<br /><br />
<asp:label id="Message" 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>CheckBoxList Example</title>
<script language="VB" runat="server">
Sub Check_Clicked(sender As Object, e As EventArgs)
Dim i As Integer
Message.Text = "Selected Item(s):<br /><br />"
For i = 0 To CheckBoxList1.Items.Count - 1
If checkboxlist1.Items(i).Selected Then
Message.Text += checkboxlist1.Items(i).Text + "<br />"
End If
Next
End Sub
</script>
</head>
<body>
<form id="form1" action="CheckBoxList.aspx" method="post" runat="server">
<h3>CheckBoxList Example</h3>
<asp:CheckBoxList id="CheckBoxList1"
AutoPostBack="True"
CellPadding="5"
CellSpacing="5"
RepeatColumns="2"
RepeatDirection="Vertical"
RepeatLayout="Flow"
TextAlign="Right"
OnSelectedIndexChanged="Check_Clicked"
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:CheckBoxList>
<br /><br />
<asp:label id="Message" runat="server"/>
</form>
</body>
</html>
<%@ 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 runat="server">
<title> CheckBoxList CellPadding and CellSpacing Example </title>
<script runat="server">
void Check_Clicked(Object sender, EventArgs e)
{
Message.Text = "Selected Item(s):<br /><br />";
// Iterate through the Items collection of the CheckBoxList
// control and display the selected items.
for (int i=0; i<checkboxlist1.Items.Count; i++)
{
if (checkboxlist1.Items[i].Selected)
{
Message.Text += checkboxlist1.Items[i].Text + "<br />";
}
}
}
void Index_Change(Object sender, EventArgs e)
{
// Set the cell padding and cell spacing based on the selection
// from the drop-down list controls. Notice that cell padding and
// cell spacing only applies when the RepeatLayout property is set
// to RepeatLayout.Table.
checkboxlist1.CellPadding = CellPaddingList.SelectedIndex;
checkboxlist1.CellSpacing = CellSpacingList.SelectedIndex;
}
</script>
</head>
<body>
<form id="form1" runat="server">
<h3> CheckBoxList CellPadding and CellSpacing Example </h3>
Select items from the CheckBoxList.
<br /><br />
<asp:CheckBoxList id="checkboxlist1"
AutoPostBack="True"
CellPadding="5"
CellSpacing="5"
RepeatColumns="2"
RepeatDirection="Vertical"
RepeatLayout="Table"
TextAlign="Right"
OnSelectedIndexChanged="Check_Clicked"
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:CheckBoxList>
<br /><br />
<asp:label id="Message" runat="server"
AssociatedControlID="checkboxlist1"/>
<hr />
Select different values for the cell padding and cell spacing.
<table cellpadding="5">
<tr>
<td>
CellPadding:
</td>
<td>
CellSpacing:
</td>
</tr>
<tr>
<td>
<asp:DropDownList id="CellPaddingList"
AutoPostBack="True"
OnSelectedIndexChanged="Index_Change"
runat="server">
<asp:ListItem>0</asp:ListItem>
<asp:ListItem>1</asp:ListItem>
<asp:ListItem>2</asp:ListItem>
<asp:ListItem>3</asp:ListItem>
<asp:ListItem>4</asp:ListItem>
<asp:ListItem Selected="True">5</asp:ListItem>
</asp:DropDownList>
</td>
<td>
<asp:DropDownList id="CellSpacingList"
AutoPostBack="True"
OnSelectedIndexChanged="Index_Change"
runat="server">
<asp:ListItem>0</asp:ListItem>
<asp:ListItem>1</asp:ListItem>
<asp:ListItem>2</asp:ListItem>
<asp:ListItem>3</asp:ListItem>
<asp:ListItem>4</asp:ListItem>
<asp:ListItem Selected="True">5</asp:ListItem>
</asp:DropDownList>
</td>
</tr>
</table>
</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 runat="server">
<title> CheckBoxList CellPadding and CellSpacing Example </title>
<script runat="server">
Sub Check_Clicked(sender as Object, e As EventArgs)
Message.Text = "Selected Item(s):<br /><br />"
' Iterate through the Items collection of the CheckBoxList
' control and display the selected items.
Dim i As Integer
For i=0 To checkboxlist1.Items.Count - 1
If checkboxlist1.Items(i).Selected Then
Message.Text &= checkboxlist1.Items(i).Text & "<br />"
End If
Next
End Sub
Sub Index_Change(sender as Object, e As EventArgs)
' Set the cell padding and cell spacing based on the selection
' from the drop down-list controls. Notice that cell padding and
' cell spacing only applies when the RepeatLayout property is set
' to RepeatLayout.Table.
checkboxlist1.CellPadding = CellPaddingList.SelectedIndex
checkboxlist1.CellSpacing = CellSpacingList.SelectedIndex
End Sub
</script>
</head>
<body>
<form id="form1" runat="server">
<h3> CheckBoxList CellPadding and CellSpacing Example </h3>
Select items from the CheckBoxList.
<br /><br />
<asp:CheckBoxList id="checkboxlist1"
AutoPostBack="True"
CellPadding="5"
CellSpacing="5"
RepeatColumns="2"
RepeatDirection="Vertical"
RepeatLayout="Table"
TextAlign="Right"
OnSelectedIndexChanged="Check_Clicked"
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:CheckBoxList>
<br /><br />
<asp:label id="Message" runat="server"/>
<hr />
Select different values for the cell padding and cell spacing.
<table cellpadding="5">
<tr>
<td>
CellPadding:
</td>
<td>
CellSpacing:
</td>
</tr>
<tr>
<td>
<asp:DropDownList id="CellPaddingList"
AutoPostBack="True"
OnSelectedIndexChanged="Index_Change"
runat="server">
<asp:ListItem>0</asp:ListItem>
<asp:ListItem>1</asp:ListItem>
<asp:ListItem>2</asp:ListItem>
<asp:ListItem>3</asp:ListItem>
<asp:ListItem>4</asp:ListItem>
<asp:ListItem Selected="True">5</asp:ListItem>
</asp:DropDownList>
</td>
<td>
<asp:DropDownList id="CellSpacingList"
AutoPostBack="True"
OnSelectedIndexChanged="Index_Change"
runat="server">
<asp:ListItem>0</asp:ListItem>
<asp:ListItem>1</asp:ListItem>
<asp:ListItem>2</asp:ListItem>
<asp:ListItem>3</asp:ListItem>
<asp:ListItem>4</asp:ListItem>
<asp:ListItem Selected="True">5</asp:ListItem>
</asp:DropDownList>
</td>
</tr>
</table>
</form>
</body>
</html>
Remarks
Use this property to control the spacing between individual cells in the CheckBoxList control. This property is applied both vertically and horizontally.
Applies to
See also
Співпраця з нами на GitHub
Джерело цього вмісту можна знайти на GitHub, де також можна створювати й переглядати запитання та запити на внесення змін. Докладні відомості наведено в нашому посібнику для співавторів.
