ButtonField.ImageUrl 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 image to display for each button in the ButtonField object.
public:
virtual property System::String ^ ImageUrl { System::String ^ get(); void set(System::String ^ value); };
public virtual string ImageUrl { get; set; }
member this.ImageUrl : string with get, set
Public Overridable Property ImageUrl As String
Property Value
The image to display for each button in the ButtonField. The default is an empty string (""), which indicates that the ImageUrl property is not set.
Examples
The following code example demonstrates how to use the ImageUrl property to specify an image to display for each button in the ButtonField object. For this code example to display, you must provide your own image.
<%@ Page language="C#" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">
void CustomersGridView_RowCommand(Object sender, GridViewCommandEventArgs e)
{
// If multiple ButtonField column fields are used, use the
// CommandName property to determine which button was clicked.
if(e.CommandName=="Select")
{
// Convert the row index stored in the CommandArgument
// property to an Integer.
int index = Convert.ToInt32(e.CommandArgument);
// Get the last name of the selected author from the appropriate
// cell in the GridView control.
GridViewRow selectedRow = CustomersGridView.Rows[index];
TableCell lastNameCell = selectedRow.Cells[1];
string lastName = lastNameCell.Text;
// Display the selected author.
Message.Text = "You selected " + lastName + ".";
}
}
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>ButtonField ImageUrl Example</title>
</head>
<body>
<form id="form1" runat="server">
<h3>ButtonField ImageUrl Example</h3>
<asp:label id="Message"
forecolor="Red"
runat="server"
AssociatedControlID="CustomersGridView"/>
<!-- Set the ImageUrl property of the ButtonField declaratively. -->
<asp:gridview id="CustomersGridView"
datasourceid="CustomersSqlDataSource"
autogeneratecolumns="false"
onrowcommand="CustomersGridView_RowCommand"
runat="server">
<columns>
<asp:buttonfield buttontype="Image"
commandname="Select"
headertext="Select Author"
ImageUrl="~\images\ButtonImage.jpg"/>
<asp:boundfield datafield="ContactName"
headertext="ContactName"/>
<asp:boundfield datafield="ContactTitle"
headertext="ContactTitle"/>
</columns>
</asp:gridview>
<!-- This example uses Microsoft SQL Server and connects -->
<!-- to the Northwind sample database. -->
<asp:sqldatasource id="CustomersSqlDataSource"
selectcommand="Select [CustomerID], [ContactName], [ContactTitle] From [Customers]"
connectionstring="<%$ ConnectionStrings:NorthWindConnection%>"
runat="server">
</asp:sqldatasource>
</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">
<script runat="server">
Sub CustomersGridView_RowCommand(ByVal sender As Object, ByVal e As GridViewCommandEventArgs)
' If multiple ButtonField column fields are used, use the
' CommandName property to determine which button was clicked.
If e.CommandName = "Select" Then
' Convert the row index stored in the CommandArgument
' property to an Integer.
Dim index As Integer = Convert.ToInt32(e.CommandArgument)
' Get the last name of the selected author from the appropriate
' cell in the GridView control.
Dim selectedRow As GridViewRow = CustomersGridView.Rows(index)
Dim lastNameCell As TableCell = selectedRow.Cells(1)
Dim lastName As String = lastNameCell.Text
' Display the selected author.
Message.Text = "You selected " & lastName & "."
End If
End Sub
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>ButtonField ImageUrl Example</title>
</head>
<body>
<form id="form1" runat="server">
<h3>ButtonField ImageUrl Example</h3>
<asp:label id="Message"
forecolor="Red"
runat="server"
AssociatedControlID="CustomersGridView"/>
<!-- Set the ImageUrl property of the ButtonField declaratively. -->
<asp:gridview id="CustomersGridView"
datasourceid="CustomersSqlDataSource"
autogeneratecolumns="false"
onrowcommand="CustomersGridView_RowCommand"
runat="server">
<columns>
<asp:buttonfield buttontype="Image"
commandname="Select"
headertext="Select Author"
ImageUrl="~\images\ButtonImage.jpg"/>
<asp:boundfield datafield="ContactName"
headertext="ContactName"/>
<asp:boundfield datafield="ContactTitle"
headertext="ContactTitle"/>
</columns>
</asp:gridview>
<!-- This example uses Microsoft SQL Server and connects -->
<!-- to the Northwind sample database. -->
<asp:sqldatasource id="CustomersSqlDataSource"
selectcommand="Select [CustomerID], [ContactName], [ContactTitle] From [Customers]"
connectionstring="<%$ ConnectionStrings:NorthWindConnection%>"
runat="server">
</asp:sqldatasource>
</form>
</body>
</html>
Remarks
When the ButtonType property of a ButtonField object is set to the Image value, use the ImageUrl property to specify the image to display for each button. This image can be in any file format (.jpg, .gif, .bmp, and so on), as long as the client browser supports that format.
The value of this property is stored in view state.
Applies to
.NET
피드백
https://aka.ms/ContentUserFeedback
출시 예정: 2024년 내내 콘텐츠에 대한 피드백 메커니즘으로 GitHub 문제를 단계적으로 폐지하고 이를 새로운 피드백 시스템으로 바꿀 예정입니다. 자세한 내용은 다음을 참조하세요.다음에 대한 사용자 의견 제출 및 보기