动态创建模板，验证数据问题，请问如何解决，谢谢！

520NET 2013-08-15 11:54:57

页面：
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
</head>
<body>
<form id="form1" runat="server">
<div>

<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False"
onrowdatabound="GridView1_RowDataBound">
</asp:GridView>

</div>
</form>
</body>
</html>

代码：

public partial class _Default : System.Web.UI.Page
{
private DataTable getDateTable()
{
DataTable dt = new DataTable();
dt.Columns.Add(new DataColumn("CODE", typeof(Int32)));
dt.Columns.Add(new DataColumn("NAME", typeof(String)));
DataRow dr = dt.NewRow();
dr[0] = 1;
dr[1] = "01";
dt.Rows.Add(dr);
return dt;
}

protected override void OnInit(EventArgs e)
{
TemplateField customField = new TemplateField();
customField.ShowHeader = true;
customField.HeaderTemplate = new GridViewTemplate(DataControlRowType.Header, "CODE");
GridViewTemplate gvt = new GridViewTemplate(DataControlRowType.DataRow, "lblCODE", "CODE");
customField.ItemTemplate = gvt;
GridView1.Columns.Add(customField);
base.OnInit(e);
}

protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
GridView1.DataSource = getDateTable();
GridView1.DataBind();
}
}

protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
{
if (e.Row.RowType == DataControlRowType.DataRow)
{
//Label tb = (Label)e.Row.FindControl("lblCODE");
RegularExpressionValidator regexpvalidator = new RegularExpressionValidator();
regexpvalidator.ID = "RegularExpressionValidator1";
regexpvalidator.ValidationExpression = "\\w+([-+.']\\w+)*@\\w+([-.]\\w+)*\\.\\w+([-.]\\w+)*";
regexpvalidator.ControlToValidate = "lblCODE";
regexpvalidator.ErrorMessage = "Invalid Email Id";
regexpvalidator.SetFocusOnError = true;
e.Row.Cells[0].Controls.Add(regexpvalidator);
}
}
}

public class GridViewTemplate : ITemplate
{
private DataControlRowType templateType;
private string columnName;
private string ID;

public GridViewTemplate(DataControlRowType type, string colname)
{
templateType = type;
columnName = colname;
}

public GridViewTemplate(DataControlRowType type, string controlID, string colname)
{
templateType = type;
ID = controlID;
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:
Label lbl = new Label();
lbl.ID = ID;
lbl.DataBinding += new System.EventHandler(TextBox_DataBinding);
container.Controls.Add(lbl);
break;
default:
break;
}
}
private void TextBox_DataBinding(object sender, EventArgs e)
{
Label lbl = sender as Label;
if (lbl != null)
{
GridViewRow container = lbl.NamingContainer as GridViewRow;
if (container != null)
{
object dataValue = DataBinder.Eval(container.DataItem, columnName);
if (dataValue != DBNull.Value)
{
lbl.Text = dataValue.ToString();
}
}
}
}

}