This should do it:
gv.HeaderRow.TableSection = TableRowSection.TableHeader;
I use this in OnRowDataBound
event:
protected void GridViewResults_OnRowDataBound(object sender, GridViewRowEventArgs e) {
if (e.Row.RowType == DataControlRowType.Header) {
e.Row.TableSection = TableRowSection.TableHeader;
}
}
The code in the answer needs to go on Page_Load
or GridView_PreRender
. I put it in a method that was called after Page_Load
and got a NullReferenceException
.
I use the following code to do this:
The if
statements I added are important.
Otherwise (depending on how you render your grid) you'll throw exceptions like:
The table must contain row sections in order of header, body and then footer.
protected override void OnPreRender(EventArgs e)
{
if ( (this.ShowHeader == true && this.Rows.Count > 0)
|| (this.ShowHeaderWhenEmpty == true))
{
//Force GridView to use <thead> instead of <tbody> - 11/03/2013 - MCR.
this.HeaderRow.TableSection = TableRowSection.TableHeader;
}
if (this.ShowFooter == true && this.Rows.Count > 0)
{
//Force GridView to use <tfoot> instead of <tbody> - 11/03/2013 - MCR.
this.FooterRow.TableSection = TableRowSection.TableFooter;
}
base.OnPreRender(e);
}
The this
object is my GridView.
I actually overrode the Asp.net GridView to make my own custom control, but you could paste this into your aspx.cs page and reference the GridView by name instead of using the custom-gridview approach.
FYI: I haven't tested the footer logic, but I do know this works for Headers.
This works for me:
protected void GrdPagosRowCreated(object sender, GridViewRowEventArgs e)
{
if (e.Row.RowType == DataControlRowType.DataRow)
{
e.Row.TableSection = TableRowSection.TableBody;
}
else if (e.Row.RowType == DataControlRowType.Header)
{
e.Row.TableSection = TableRowSection.TableHeader;
}
else if (e.Row.RowType == DataControlRowType.Footer)
{
e.Row.TableSection = TableRowSection.TableFooter;
}
}
This was tried in VS2010.
I know this is old, but, here's an interpretation of MikeTeeVee's answer, for a standard gridview:
aspx page:
<asp:GridView ID="GridView1" runat="server"
OnPreRender="GridView_PreRender">
aspx.cs:
protected void GridView_PreRender(object sender, EventArgs e)
{
GridView gv = (GridView)sender;
if ((gv.ShowHeader == true && gv.Rows.Count > 0)
|| (gv.ShowHeaderWhenEmpty == true))
{
//Force GridView to use <thead> instead of <tbody> - 11/03/2013 - MCR.
gv.HeaderRow.TableSection = TableRowSection.TableHeader;
}
if (gv.ShowFooter == true && gv.Rows.Count > 0)
{
//Force GridView to use <tfoot> instead of <tbody> - 11/03/2013 - MCR.
gv.FooterRow.TableSection = TableRowSection.TableFooter;
}
}
Create a function and use that function in your PageLoad
event like this:
The function is:
private void MakeGridViewPrinterFriendly(GridView gridView) {
if (gridView.Rows.Count > 0) {
gridView.UseAccessibleHeader = true;
gridView.HeaderRow.TableSection = TableRowSection.TableHeader;
}
}
The PageLoad
event is:
protected void Page_Load(object sender, EventArgs e) {
if (!IsPostBack)
{
MakeGridViewPrinterFriendly(grddata);
}
}
If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With