在asp.net 2.0中,gridview控件是十分不错的控件。有的时候,可能一个GRIDVIEW控件中
的各行都是文本框,如何一次性更新所有修改过的记录呢?有两种方法,一种是使用sqldatasource来更新
所有记录,但这个方法比较慢,因为每更新一条记录都要建立数据连接并执行updatecommand,会影响性能,
但还是先来看下实现方法:
<%@ Page Language="C#" %>
<script runat="server">
void Button1_Click(object sender, EventArgs e)
{
for (int i = 0; i < GridView1.Rows.Count; i++)
{
GridViewRow row = GridView1.Rows[i];
SqlDataSource1.UpdateParameters[0].DefaultValue = ((TextBox)row.Cells[0].FindControl("TextBox2")).Text;
SqlDataSource1.UpdateParameters[1].DefaultValue = ((TextBox)row.Cells[1].FindControl("TextBox3")).Text;
SqlDataSource1.UpdateParameters[2].DefaultValue = GridView1.DataKeys[i].Value.ToString();
SqlDataSource1.Update();
}
}
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>Untitled Page</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:GridView ID="GridView1" Runat="server" DataSourceID="SqlDataSource1" DataKeyNames="CustomerID"
AutoGenerateColumns="False">
<Columns>
<asp:TemplateField SortExpression="CustomerID" HeaderText="CustomerID">
<ItemTemplate>
<asp:TextBox Runat="server" Text='<%# Bind("CustomerID") %>' ID="TextBox1"></asp:TextBox>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField SortExpression="CompanyName" HeaderText="CompanyName">
<ItemTemplate>
<asp:TextBox Runat="server" Text='<%# Bind("CompanyName") %>' ID="TextBox2"></asp:TextBox>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField SortExpression="ContactName" HeaderText="ContactTitle">
<ItemTemplate>
<asp:TextBox Runat="server" Text='<%# Bind("ContactTitle") %>' ID="TextBox3"></asp:TextBox>
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
<asp:SqlDataSource ID="SqlDataSource1" Runat="server"
SelectCommand="SELECT [CustomerID], [CompanyName], [ContactName], [ContactTitle] FROM [Customers]"
UpdateCommand="UPDATE [Customers] SET [CompanyName] = @CompanyName, [ContactTitle] = @ContactTitle WHERE [CustomerID] = @CustomerID"
ConnectionString="<%$ ConnectionStrings:AppConnectionString1 %>">
<UpdateParameters>
<asp:Parameter Type="String" Name="CompanyName"></asp:Parameter>
<asp:Parameter Type="String" Name="ContactTitle"></asp:Parameter>
<asp:Parameter Type="String" Name="CustomerID"></asp:Parameter>
</UpdateParameters