CommandField.ShowDeleteButton 属性
定义
重要
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获取或设置一个值，该值指示是否在 CommandField 字段中显示“删除”按钮。
public:
virtual property bool ShowDeleteButton { bool get(); void set(bool value); };public virtual bool ShowDeleteButton { get; set; }member this.ShowDeleteButton : bool with get, setPublic Overridable Property ShowDeleteButton As Boolean属性值
如果在 CommandField 中显示“删除”按钮，则为 true，否则为 false。 默认值为 false。
示例
下面的代码示例演示如何使用 ShowDeleteButton 属性显示控件中每条记录的 GridView “删除”按钮。
<%@ 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>CommandField Example</title>
</head>
<body>
<form id="form1" runat="server">
<h3>CommandField Example</h3>
<asp:gridview id="CustomersGridView"
datasourceid="CustomersSqlDataSource"
autogeneratecolumns="false"
datakeynames="CustomerID"
runat="server">
<columns>
<asp:commandfield showdeletebutton="true"
headertext="Edit Controls"/>
<asp:boundfield datafield="CustomerID"
headertext="Customer ID" />
<asp:boundfield datafield="CompanyName"
headertext="Company Name"/>
<asp:boundfield datafield="Address"
headertext="Address"/>
<asp:boundfield datafield="City"
headertext="City"/>
<asp:boundfield datafield="PostalCode"
headertext="ZIP Code"/>
<asp:boundfield datafield="Country"
headertext="Country"/>
</columns>
</asp:gridview>
<!-- This example uses Microsoft SQL Server and connects -->
<!-- to the Northwind sample database. Use an ASP.NET -->
<!-- expression to retrieve the connection string value -->
<!-- from the Web.config file. -->
<asp:sqldatasource id="CustomersSqlDataSource"
selectcommand="Select [CustomerID], [CompanyName], [Address], [City], [PostalCode], [Country] From [Customers]"
deletecommand="Delete [Customers] Where [CustomerID] = @CustomerID"
connectionstring="<%$ ConnectionStrings:NorthWindConnectionString%>"
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">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>CommandField Example</title>
</head>
<body>
<form id="form1" runat="server">
<h3>CommandField Example</h3>
<asp:gridview id="CustomersGridView"
datasourceid="CustomersSqlDataSource"
autogeneratecolumns="false"
datakeynames="CustomerID"
runat="server">
<columns>
<asp:commandfield showdeletebutton="true"
headertext="Edit Controls"/>
<asp:boundfield datafield="CustomerID"
headertext="Customer ID" />
<asp:boundfield datafield="CompanyName"
headertext="Company Name"/>
<asp:boundfield datafield="Address"
headertext="Address"/>
<asp:boundfield datafield="City"
headertext="City"/>
<asp:boundfield datafield="PostalCode"
headertext="ZIP Code"/>
<asp:boundfield datafield="Country"
headertext="Country"/>
</columns>
</asp:gridview>
<!-- This example uses Microsoft SQL Server and connects -->
<!-- to the Northwind sample database. Use an ASP.NET -->
<!-- expression to retrieve the connection string value -->
<!-- from the Web.config file. -->
<asp:sqldatasource id="CustomersSqlDataSource"
selectcommand="Select [CustomerID], [CompanyName], [Address], [City], [PostalCode], [Country] From [Customers]"
deletecommand="Delete [Customers] Where [CustomerID] = @CustomerID"
connectionstring="<%$ ConnectionStrings:NorthWindConnectionString%>"
runat="server">
</asp:sqldatasource>
</form>
</body>
</html>
注解
ShowDeleteButton使用 属性可指定是否在数据源控件中每条CommandField记录的字段中显示“删除”按钮。 “删除”按钮允许从数据源中删除记录。
注意
将数据绑定控件与数据源控件 (（如 SqlDataSource 控件) ）结合使用时，数据绑定控件可以利用数据源控件的功能并提供自动删除功能。 对于其他数据源，必须提供例程，以便在数据绑定控件的相应事件期间执行删除操作。
ButtonType当字段的 CommandField 属性设置为 ButtonType.Button 或 ButtonType.Link时，DeleteText使用 属性指定要为“删除”按钮显示的文本。 或者，可以通过先将 ButtonType 属性设置为 ButtonType.Image ，然后设置 DeleteImageUrl 属性来显示图像。
