由于事件参数 GridViewCommandEventArgs 并不公开Row属性指示当前行,(DataGridCommandEventArgs 公开 Item 属性以获取当前 DataGridItem,不知 ASP.NET Team 是如何考虑这一设计的),因此需要一点“技巧”来获取此属性。
其实这是一个早就已知的问题,鉴于CSDN里面每每有人疑惑,这里稍微整理下,便于参考。
至少有三种方法可以使用,其中给 CommandArgument 绑定 RowIndex 是最常见的方法,也是 MSDN 提供的,然而实际上只需要充分利用控件层次与事件参数就足够可以回溯出来:sender 与 NamingContainer/BindingContainer,具体见代码。
protected void GridView1_RowCommand(object sender, GridViewCommandEventArgs e)
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedBlockStart.gif)
{
int rowIndex = -1;
GridViewRow row = null;
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
switch (e.CommandName)
{
case "Command1": // 模板列
// 对于模板列内的按钮,我们需要显示绑定行索引到按钮的 CommandArgument 属性
// 以获取触发事件的行信息
rowIndex = Convert.ToInt32(e.CommandArgument);
row = GridView1.Rows[rowIndex];
DisplayInfo(row, e.CommandName);
// your codes
// ![](https://www.cnblogs.com/Images/dot.gif)
break;
case "Command2": // 模板列
// 同样处于模板列中,但不采用 Command1 方式,而是通过 NamingContrainer 属性
// 直接获取当前的 GridViewRow
Control cmdControl = e.CommandSource as Control; // 表示触发事件的 IButtonControl,保持统一性并便于后续操作,我们这里直接转化为控件基类 Control
row = cmdControl.NamingContainer as GridViewRow;
DisplayInfo(row, e.CommandName);
// your codes
// ![](https://www.cnblogs.com/Images/dot.gif)
break;
case "Command3": // 绑定列
// 对于 ButtonField 列,数据源控件内部自动以适当的项索引值填充 CommandArgument 属性。
// 而无需我们显示绑定其 CommandArgument 属性
// 注意,我们这里无法采用 Command2 的方式,对于 BUttonField 触发的事件,
// GridViewCommandEventArgs.CommandSource 表示的包含此按钮的 GridView
rowIndex = Convert.ToInt32(e.CommandArgument);
row = GridView1.Rows[rowIndex];
DisplayInfo(row, e.CommandName);
// your codes
// ![](https://www.cnblogs.com/Images/dot.gif)
break;
}
}
完整代码:
![](https://www.cnblogs.com/Images/OutliningIndicators/ContractedBlock.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedBlockStart.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedBlockStart.gif)
<%
@ Page Language="C#" %>
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedBlockStart.gif)
<%
@ Import Namespace="System.Data" %>
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedBlockStart.gif)
<script runat="server">![](https://www.cnblogs.com/Images/dot.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
protected void Page_Load(object sender, EventArgs e)
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
{
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
if (!IsPostBack)
{
LoadProductData();
}
}
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
protected void GridView1_RowCommand(object sender, GridViewCommandEventArgs e)
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
{
int rowIndex = -1;
GridViewRow row = null;
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
switch (e.CommandName)
{
case "Command1": // 模板列
// 对于模板列内的按钮,我们需要显示绑定行索引到按钮的 CommandArgument 属性
// 以获取触发事件的行信息
rowIndex = Convert.ToInt32(e.CommandArgument);
row = GridView1.Rows[rowIndex];
DisplayInfo(row, e.CommandName);
// your codes
// ![](https://www.cnblogs.com/Images/dot.gif)
break;
case "Command2": // 模板列
// 同样处于模板列中,但不采用 Command1 方式,而是通过 NamingContrainer 属性
// 直接获取当前的 GridViewRow
Control cmdControl = e.CommandSource as Control; // 表示触发事件的 IButtonControl,保持统一性并便于后续操作,我们这里直接转化为控件基类 Control
row = cmdControl.NamingContainer as GridViewRow;
DisplayInfo(row, e.CommandName);
// your codes
// ![](https://www.cnblogs.com/Images/dot.gif)
break;
case "Command3": // 绑定列
// 对于 ButtonField 列,数据源控件内部自动以适当的项索引值填充 CommandArgument 属性。
// 而无需我们显示绑定其 CommandArgument 属性
// 注意,我们这里无法采用 Command2 的方式,对于 BUttonField 触发的事件,
// GridViewCommandEventArgs.CommandSource 表示的包含此按钮的 GridView
rowIndex = Convert.ToInt32(e.CommandArgument);
row = GridView1.Rows[rowIndex];
DisplayInfo(row, e.CommandName);
// your codes
// ![](https://www.cnblogs.com/Images/dot.gif)
break;
}
}
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
void DisplayInfo(GridViewRow row, string cmdName)
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
{
TextBox txtNewProductName = row.FindControl("txtNewProductName") as TextBox;
Response.Write(String.Format("<pre>RowIndex: {0}\nOldProductName: {1}\nNewProductName: {2}\nFiredBy: {3}</pre>",
row.RowIndex,
row.Cells[0].Text,
txtNewProductName.Text,
cmdName));
}
void LoadProductData()
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
{
DataTable dt = CreateProductTable();
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
GridView1.DataSource = dt;
GridView1.DataBind();
}
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
#region sample data
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
static DataTable CreateProductTable()
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
{
DataTable tbl = new DataTable("Products");
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
tbl.Columns.Add("ProductID", typeof(int));
tbl.Columns.Add("ProductName", typeof(string));
tbl.Columns.Add("CategoryID", typeof(int));
DataRow row = tbl.NewRow();
row[0] = 1;
row[1] = "Chai";
row[2] = 1;
tbl.Rows.Add(row);
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
row = tbl.NewRow();
row[0] = 2;
row[1] = "Chang";
row[2] = 1;
tbl.Rows.Add(row);
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
row = tbl.NewRow();
row[0] = 3;
row[1] = "Aniseed Syrup";
row[2] = 2;
tbl.Rows.Add(row);
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
row = tbl.NewRow();
row[0] = 4;
row[1] = "Chef Anton's Cajun Seasoning";
row[2] = 2;
tbl.Rows.Add(row);
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
row = tbl.NewRow();
row[0] = 5;
row[1] = "Chef Anton's Gumbo Mix";
row[2] = 2;
tbl.Rows.Add(row);
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
row = tbl.NewRow();
row[0] = 47;
row[1] = "Zaanse koeken";
row[2] = 3;
tbl.Rows.Add(row);
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
row = tbl.NewRow();
row[0] = 48;
row[1] = "Chocolade";
row[2] = 3;
tbl.Rows.Add(row);
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
row = tbl.NewRow();
row[0] = 49;
row[1] = "Maxilaku";
row[2] = 3;
tbl.Rows.Add(row);
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
return tbl;
}
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
#endregion
</script>
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
<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" AutoGenerateColumns="false" OnRowCommand="GridView1_RowCommand">
<Columns>
<asp:BoundField DataField="ProductName" HeaderText="OldProductName" />
<asp:TemplateField HeaderText="NewProductName">
<ItemTemplate>
<asp:TextBox ID="txtNewProductName" runat="server" Text='<%# Eval("ProductName") %>'></asp:TextBox>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField>
<ItemTemplate>
<asp:Button ID="Button1" CommandName="Command1" CommandArgument='<%# Container.DataItemIndex %>' runat="server" Text="Command1" />
<asp:Button ID="Button2" CommandName="Command2" runat="server" Text="Command2" />
</ItemTemplate>
</asp:TemplateField>
<asp:ButtonField CommandName="Command3" Text="Command3" />
</Columns>
</asp:GridView>
</div>
</form>
</body>
</html>
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
下载:
/Files/Jinglecat/Demo_AccessRowOnGridViewCommand.rar