我一直在尝试使用以下代码创建一个可点击的网格视图:
using System;
using System.ComponentModel;
using System.Configuration;
using System.Web.UI;
using System.Web.UI.WebControls;
namespace CustomGridView
{
/// <summary>
/// Summary description for ClickableGridView
/// </summary>
public class ClickableGridView : GridView
{
public string RowCssClass
{
get
{
string rowClass = (string)ViewState["rowClass"];
if (!string.IsNullOrEmpty(rowClass))
return rowClass;
else
return string.Empty;
}
set
{
ViewState["rowClass"] = value;
}
}
public string HoverRowCssClass
{
get
{
string hoverRowClass = (string)ViewState["hoverRowClass"];
if (!string.IsNullOrEmpty(hoverRowClass))
return hoverRowClass;
else
return string.Empty;
}
set
{
ViewState["hoverRowClass"] = value;
}
}
private static readonly object RowClickedEventKey = new object();
public event GridViewRowClicked RowClicked;
protected virtual void OnRowClicked(GridViewRowClickedEventArgs e)
{
if (RowClicked != null)
RowClicked(this, e);
}
protected override void RaisePostBackEvent(string eventArgument)
{
if (eventArgument.StartsWith("rc"))
{
int index = Int32.Parse(eventArgument.Substring(2));
GridViewRowClickedEventArgs args = new GridViewRowClickedEventArgs(Rows[index]);
OnRowClicked(args);
}
else
base.RaisePostBackEvent(eventArgument);
}
protected override void PrepareControlHierarchy()
{
base.PrepareControlHierarchy();
for (int i = 0; i < Rows.Count; i++)
{
string argsData = "rc" + Rows[i].RowIndex.ToString();
Rows[i].Attributes.Add("onclick", Page.ClientScript.GetPostBackEventReference(this, argsData));
if (RowCssClass != string.Empty)
Rows[i].Attributes.Add("onmouseout", "this.className='" + RowCssClass + "';");
if (HoverRowCssClass != string.Empty)
Rows[i].Attributes.Add("onmouseover", "this.className='" + HoverRowCssClass + "';");
}
}
}
public class GridViewRowClickedEventArgs : EventArgs
{
private GridViewRow _row;
public GridViewRowClickedEventArgs(GridViewRow aRow)
: base()
{
_row = aRow;
}
public GridViewRow Row
{
get
{ return _row; }
}
}
public delegate void GridViewRowClicked(object sender, GridViewRowClickedEventArgs args);
}
来自:http ://aspadvice.com/blogs/joteke/archive/2006/01/07/14576.aspx
我已将代码放入自定义服务器控件中,以创建我在主项目中引用的 .dll 文件。作为一个简单的测试,我只是在使用这条线
<cgv:ClickableGridView ID = "MyGridView" runat = "server" />
和
MyGridView.DataSource = reader;
MyGridView.DataBind();
以查看表格的外观。但是,当我编译主页时,我无法显示任何内容。
这个自定义控件与默认的 gridview 有什么不同吗?上面的代码显示默认的gridview没有问题,但是当使用clickablegridview时,什么都没有显示(没有编译错误)。