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将 TemplateField 字段列动态添加到 GridView 控件

2009-04-21 15:09 399 查看

<%@ Page language="C#" %>
<script runat="server">
// Create a dynamic template column
public class GridViewTextTemplate : System.Web.UI.ITemplate
{
private DataControlRowType templateType;
private string columnName;
private string cId;

public GridViewTextTemplate(DataControlRowType type, string colname, string controlId)
{
templateType = type;
columnName = colname;
cId = controlId;
}

public void InstantiateIn(System.Web.UI.Control container)
{
// Create the content for the different row types.
switch (templateType)
{
case DataControlRowType.Header:
Literal myHeadLiteral = new Literal();
// Create the controls and set id properties to put in the header
myHeadLiteral.ID = cId;
myHeadLiteral.Text = "<B>" + columnName + "</B>";
container.Controls.Add(myHeadLiteral);
break;
case DataControlRowType.DataRow:
// Create the controls and set id properties to put in a data row
TextBox myTextBox = new TextBox();
myTextBox.ID = cId;
myTextBox.DataBinding += new EventHandler(this.TextBoxDataBinding);
container.Controls.Add(myTextBox);
break;
default:
// Insert code to handle unexpected values.
break;
}
}

private void TextBoxDataBinding(Object sender, EventArgs e)
{
TextBox myTextBox = (TextBox)sender;
GridViewRow row = (GridViewRow)myTextBox.NamingContainer;

myTextBox.Text = System.Web.UI.DataBinder.Eval(row.DataItem, columnName).ToString();
}
}

void Page_Load(Object sender, EventArgs e)
{
// Create the field columns when the page is first loaded.
if (!IsPostBack)
{
TemplateField tField;

// Create the dynamic templates
tField = new TemplateField();
tField.ItemTemplate = new GridViewTextTemplate(DataControlRowType.DataRow, "parameter_description", "textParameterDesc");
tField.HeaderTemplate = new GridViewTextTemplate(DataControlRowType.Header, "说明", "textParameterDescHd");

// Add the dynamic templates field column to the GridView
GridView1.Columns.Add(tField);
}
}
</script>

<html>
<body>
<form id="Form1" runat="server">

<asp:gridview id="GridView1"
datasourceid="TestSqlDataSource"
autogeneratecolumns="False"
runat="server">
</asp:gridview>

<asp:sqldatasource id="TestSqlDataSource"
selectcommand="Select * From Parameter_Lines"
connectionstring="server=localhost;database=Test;integrated security=SSPI"
runat="server">
</asp:sqldatasource>

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

原帖地址：http://www.cnblogs.com/Fortunelee/articles/505044.html

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