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2010-05-26T15:30:57Z

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== Use a ButtonField to display a button in a GridView==



<source lang="csharp">
You can use a ButtonField to represent a custom command or one of the standard edit commands.
<%@ Page Language="C#" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN"
"http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<script runat="server">
protected void grdProductCategories_RowCommand(object sender, GridViewCommandEventArgs e)
{
int index = Int32.Parse((string)e.rumandArgument);
int id = (int)grdProductCategories.DataKeys[index].Values["Id"];
int position = (int)grdProductCategories.DataKeys[index].Values["Position"];
switch (e.rumandName)
{
case "Up":
position--;
break;
case "Down":
position++;
break;
}
srcProductCategories.UpdateParameters["Id"].DefaultValue = id.ToString();
srcProductCategories.UpdateParameters["Position"].DefaultValue = position.ToString();
srcProductCategories.Update();
}
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head id="Head1" runat="server">
<title>Show ButtonField</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:GridView
id="grdProductCategories"
DataSourceID="srcProductCategories"
DataKeyNames="Id,Position"
AutoGenerateColumns="false"
OnRowCommand="grdProductCategories_RowCommand"
Runat="server">
<Columns>
<asp:ButtonField
Text="Move Up"
CommandName="Up" />
<asp:ButtonField
Text="Move Down"
CommandName="Down" />
<asp:BoundField
DataField="Position"
HeaderText="Position" />
<asp:BoundField
DataField="Name"
HeaderText="Category Name" />
</Columns>
</asp:GridView>
<asp:SqlDataSource
id="srcProductCategories"
ConnectionString="<%$ ConnectionStrings:Products %>"
SelectCommand="SELECT Id, Name, Position FROM ProductCategories
ORDER BY Position"
UpdateCommand="UPDATE ProductCategories SET
Position=@Position WHERE Id=@Id"
Runat="server">
<UpdateParameters>
<asp:Parameter
Name="Id" />
<asp:Parameter
Name="Position" />
</UpdateParameters>
</asp:SqlDataSource>
</div>
</form>
</body>
</html>

File: Web.config
<configuration>
<connectionStrings>
<add name="Products"
connectionString="Data Source=.\SQLEXPRESS;
AttachDbFilename=|DataDirectory|MyDatabase.mdf;Integrated Security=True;User Instance=True" />
</connectionStrings>
</configuration></source>

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ASP.NET Tutorial/Data Binding/ButtonField - История изменений

в 15:30, 26 мая 2010

Admin: 1 версия