DataControlField.HeaderImageUrl Property
Definition
Important
Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.
Gets or sets the URL of an image that is displayed in the header item of a data control field.
public:
virtual property System::String ^ HeaderImageUrl { System::String ^ get(); void set(System::String ^ value); };
public virtual string HeaderImageUrl { get; set; }
member this.HeaderImageUrl : string with get, set
Public Overridable Property HeaderImageUrl As String
Property Value
A string that represents a fully qualified or relative URL to an image that is displayed in the header item of the DataControlField.
Examples
The following code example demonstrates how to declaratively set the HeaderImageUrl property of a ButtonField column, which displays an image in the GridView control's column header instead of header text.
<%@ page language="C#" %>
<!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>ASP.NET Example</title>
</head>
<body>
<form id="form1" runat="server">
<asp:sqldatasource
id="SqlDataSource1"
runat="server"
connectionstring="<%$ ConnectionStrings:MyNorthwind%>"
selectcommand="SELECT EmployeeID, FirstName, LastName, Title, Region FROM Employees">
</asp:sqldatasource>
<asp:gridview
id="GridView1"
runat="server"
allowpaging="True"
datasourceid="SqlDataSource1"
allowsorting="True"
width="472px">
<columns>
<asp:buttonfield
headerimageurl="http://www.microsoft.com/homepage/gif/bnr-microsoft.gif"
text="ClickMe"
showheader="True"
buttontype="Button">
</asp:buttonfield>
<asp:hyperlinkfield
target="http://msdn.microsoft.com/"
headertext="Link To Info"
text="MyLink">
<headerstyle backcolor="Yellow">
</headerstyle>
</asp:hyperlinkfield>
</columns>
</asp:gridview>
</form>
</body>
</html>
<%@ page language="VB" %>
<!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>ASP.NET Example</title>
</head>
<body>
<form id="form1" runat="server">
<asp:sqldatasource
id="SqlDataSource1"
runat="server"
connectionstring="<%$ ConnectionStrings:MyNorthwind%>"
selectcommand="SELECT EmployeeID, FirstName, LastName, Title, Region FROM Employees">
</asp:sqldatasource>
<asp:gridview
id="GridView1"
runat="server"
allowpaging="True"
datasourceid="SqlDataSource1"
allowsorting="True"
width="472px">
<columns>
<asp:buttonfield
headerimageurl="http://www.microsoft.com/homepage/gif/bnr-microsoft.gif"
text="ClickMe"
showheader="True"
buttontype="Button">
</asp:buttonfield>
<asp:hyperlinkfield
target="http://msdn.microsoft.com/"
headertext="Link To Info"
text="MyLink">
<headerstyle backcolor="Yellow">
</headerstyle>
</asp:hyperlinkfield>
</columns>
</asp:gridview>
</form>
</body>
</html>
Remarks
Set the HeaderImageUrl property when you want an image displayed in the header item of a data control instead of header text.
Note
If both the HeaderText and HeaderImageUrl properties are set, the HeaderImageUrl property has precedence.
Applies to
See also
意見反應
https://aka.ms/ContentUserFeedback。
即將登場:在 2024 年,我們將逐步淘汰 GitHub 問題作為內容的意見反應機制,並將它取代為新的意見反應系統。 如需詳細資訊,請參閱:提交並檢視相關的意見反應