ASP.NET 2.0 中动态添加 GridView 模板列
日期：2010-04-06 浏览次数：20399 次
动态添加列，关键是实现 ITemplate.InstantiateIn 方法。下面是一个添加 GridView 模板列的例子。
C#代码
<%...@ Page Language="C#" %>
<%...@ Import Namespace="System.Data" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">...
ICollection CreateDataSource()
...{
DataTable dt = new DataTable();
DataRow dr;
dt.Columns.Add(new DataColumn("id", typeof(Int32)));
dt.Columns.Add(new DataColumn("text", typeof(string)));
for (int i = 0; i < 6; i++)
...{
dr = dt.NewRow();
dr[0] = i;
dr[1] = "列表项目 " + i.ToString();
dt.Rows.Add(dr);
}
DataView dv = new DataView(dt);
return dv;
}
public class GridViewTemplate : ITemplate
...{
private DataControlRowType templateType;
private string columnName;
public GridViewTemplate( DataControlRowType type, string colname )
...{
templateType = type;
columnName = colname;
}
public void InstantiateIn( System.Web.UI.Control container )
...{
switch (templateType)
...{
case DataControlRowType.Header:
Literal lc = new Literal();
lc.Text = columnName;
container.Controls.Add(lc);
break;
case DataControlRowType.DataRow:
DropDownList drr = new DropDownList();
drr.ID = "dropdown";
drr.AppendDataBoundItems = true;
drr.Items.Add(new ListItem("-----请选择------",""));
drr.Items.Add(new ListItem("AA", "a"));
drr.Items.Add(new ListItem("BB", "b"));
drr.Items.Add(new ListItem("CC", "c"));
&nb
