protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
LoadGridViewProductData();
LoadDataGridProductData();
}
}
protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
{
/*
当然可以在这里进行客户端脚本绑定，
但是，我选择在重载页的 Render 方法中处理，因为
1. RowDataBound 仅仅在调用 DataBind 之后才会触发，回发通过 ViewState 创建空件不触发
假如需要更多的处理，你需要分开部分逻辑到 RowCreated 等事件中
2. 并且我们希望使用
ClientScript.GetPostBackEventReference 和 ClientScript.RegisterForEventValidation 方法
进行安全脚本的注册，而后者需要在页的 Render 阶段中才能处理
*/
}
protected void DataGrid1_ItemDataBound(object sender, DataGridItemEventArgs e)
{
// 隐藏辅助按钮列
int cellIndex = 0;
e.Item.Cells[cellIndex].Attributes["style"] = "display:none";
}
void LoadGridViewProductData()
{
DataTable dt = CreateSampleProductData();
GridView1.DataSource = dt;
GridView1.DataBind();
}
void LoadDataGridProductData()
{
DataTable dt = CreateSampleProductData();
DataGrid1.DataSource = dt;
DataGrid1.DataBind();
}
#region sample data
static DataTable CreateSampleProductData()
{
DataTable tbl = new DataTable("Products");
tbl.Columns.Add("ProductID", typeof(int));
tbl.Columns.Add("ProductName", typeof(string));
tbl.Columns.Add("UnitPrice", typeof(decimal));
tbl.Columns.Add("CategoryID", typeof(int));
tbl.Rows.Add(1, "Chai", 18, 1);
tbl.Rows.Add(2, "Chang", 19, 1);
tbl.Rows.Add(3, "Aniseed Syrup", 10, 2);
tbl.Rows.Add(4, "Chef Anton’s Cajun Seasoning", 22, 2);
tbl.Rows.Add(5, "Chef Anton’s Gumbo Mix", 21.35, 2);
tbl.Rows.Add(47, "Zaanse koeken", 9.5, 3);
tbl.Rows.Add(48, "Chocolade", 12.75, 3);
tbl.Rows.Add(49, "Maxilaku", 20, 3);
return tbl;
}
#endregion
protected override void Render(HtmlTextWriter writer)
{
// GridView
foreach (GridViewRow row in GridView1.Rows)
{
if (row.RowState == DataControlRowState.Edit)
{ // 编辑状态
row.Attributes.Remove("onclick");
row.Attributes.Remove("ondblclick");
row.Attributes.Remove("style");
row.Attributes["title"] = "编辑行";
continue;
}
if (row.RowType == DataControlRowType.DataRow)
{
// 单击事件，为了响应双击事件，需要延迟单击响应，根据需要可能需要增加延迟
// 获取ASP.NET内置回发脚本函数，返回 __doPostBack(<<EventTarget>>, <<EventArgument>>)
// 可直接硬编码写入脚本，不推荐
row.Attributes["onclick"] = String.Format("javascript:setTimeout(\"if(dbl_click){{dbl_click=false;}}else{{{0}}};\", 1000*0.3);", ClientScript.GetPostBackEventReference(GridView1, "Select$" + row.RowIndex.ToString(), true));
// 双击，设置 dbl_click=true，以取消单击响应
row.Attributes["ondblclick"] = String.Format("javascript:dbl_click=true;window.open(’DummyProductDetail.aspx?productid={0}’);", GridView1.DataKeys[row.RowIndex].Value.ToString());
//
row.Attributes["style"] = "cursor:pointer";
row.Attributes["title"] = "单击选择行，双击打开详细页面";
}
}
// DataGrid
foreach (DataGridItem item in DataGrid1.Items)
{
if (item.ItemType == ListItemType.EditItem)
{
item.Attributes.Remove("onclick");
item.Attributes.Remove("ondblclick");
item.Attributes.Remove("style");
item.Attributes["title"] = "编辑行";
continue;
}
if (item.ItemType == ListItemType.Item || item.ItemType == ListItemType.AlternatingItem)
{
//单击事件，为了响应双击事件，延迟 1 s，根据需要可能需要增加延迟
// 获取辅助的支持回发按钮
// 相对而言， GridView 支持直接将 CommandName 作为 <<EventArgument>> 故不需要辅助按钮
Button btnHiddenPostButton = item.FindControl("btnHiddenPostButton") as Button;
item.Attributes["onclick"] = String.Format("javascript:setTimeout(\"if(dbl_click){{dbl_click=false;}}else{{{0}}};\", 1000*0.3);", ClientScript.GetPostBackEventReference(btnHiddenPostButton, null));
// 双击
// 双击，设置 dbl_click=true，以取消单击响应
item.Attributes["ondblclick"] = String.Format("javascript:dbl_click=true;window.open(’DummyProductDetail.aspx?productid={0}’);", DataGrid1.DataKeys[item.ItemIndex].ToString());
//
item.Attributes["style"] = "cursor:pointer";
item.Attributes["title"] = "单击选择行，双击打开详细页面";
}
}
base.Render(writer);
}
<%@ Page Language="C#" %>
<%@ Import Namespace="System.Data" %>
<%--http://community.csdn.net/Expert/TopicView3.asp?id=5767096--%>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">
//可以将上面的后台代码嵌入此处
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head id="Head1" runat="server">
<title>ASP.NET DEMO15: GridView 行单击与双击事件2</title>
<script>
// 辅助全局变量，指示是否双击
var dbl_click = false;
</script>
</head>
<body>
<form id="form1" runat="server">
<div>
<h3>功能：</h3>
<li>单击选中行</li>
<li>双击打开详细页面</li>
<h3>说明：</h3>
<ul>
<li>这是<a href="GridView/DataGrid http://www.cnblogs.com/Jinglecat/archive/2007/09/20/900645.html"> ASP.NET DEMO 15: 同时支持行单击和双击事件</a>的改进版本</li>
<li>单击事件（onclick）使用了 setTimeout 延迟，根据实际需要修改延迟时间</li>
<li>当双击时，通过全局变量 dbl_click 来取消单击事件的响应</li>
<li>常见处理行方式会选择在 RowDataBound/ItemDataBound 中处理，这里我选择 Page.Render 中处理，至少基于以下考虑
<li style="padding-left:20px; list-style-type:square">RowDataBound 仅仅在调用 DataBind 之后才会触发，回发通过 ViewState 创建空件不触发
假如需要更多的处理，你需要分开部分逻辑到 RowCreated 等事件中</li>
<li style="padding-left:20px; list-style-type:square">并且我们希望使用
ClientScript.GetPostBackEventReference 和 ClientScript.RegisterForEventValidation 方法
进行安全脚本的注册，而后者需要在页的 Render 阶段中才能处理</li>
</li>
<li>关于“DataGrid中采取的辅助按钮支持回发”见<a href="http://www.cnblogs.com/Jinglecat/archive/2007/07/15/818394.html%22%3EASP.NET DEMO8: 为 GridView 每行添加服务器事件</a>
</ul>
<br />
<input type="button" id="Button1" value="Rebind" onclick="location.href=location.href;" />
<div style="float:left">
<h3>GridView Version</h3>
<asp:GridView ID="GridView1" DataKeyNames="ProductID" runat="server" AutoGenerateColumns="False" OnRowDataBound="GridView1_RowDataBound">
<SelectedRowStyle BackColor="CadetBlue" />
<Columns>
<asp:TemplateField HeaderText="ProductName" >
<ItemTemplate>
<%# Eval("ProductName") %>
</ItemTemplate>
<EditItemTemplate>
<asp:TextBox ID="txtProductName" runat="server" Text=’<%# Bind("ProductName") %>’ />
</EditItemTemplate>
</asp:TemplateField>
<asp:BoundField DataField="UnitPrice" HeaderText="UnitPrice" />
</Columns>
</asp:GridView></div>
<div style="float:left;padding-left:100px;">
<h3>DataGrid Version</h3>
<asp:DataGrid ID="DataGrid1" DataKeyField="ProductID" runat="server" AutoGenerateColumns="False" OnItemDataBound="DataGrid1_ItemDataBound">
<SelectedItemStyle BackColor="CadetBlue" />
<Columns>
<asp:TemplateColumn>
<ItemTemplate>
<asp:Button ID="btnHiddenPostButton" CommandName="Select" runat="server" Text="HiddenPostButton" style="display:none" />
</ItemTemplate>
</asp:TemplateColumn>
<asp:BoundColumn DataField="ProductName" HeaderText="ProductName" />
<asp:BoundColumn DataField="UnitPrice" HeaderText="UnitPrice" />
</Columns>
</asp:DataGrid></div>
</li>
</div>
</form>
</body>
</html>