Hi all, im tryng to have a GridView that suppoorts empty datasource, and INSERT functionallity at FooterRow.

I have my own class derived from GridView withfollowing code:

protected override int CreateChildControls(System.Collections.IEnumerable dataSource, bool dataBinding)

{

int numRows = base.CreateChildControls(dataSource, dataBinding);

//no data rows created, create empty table if enabled

if (numRows == 0 && ShowEmptyTable)

{

//create table

Table table = new Table();

table.ID = this.ID;

//create a new header row

GridViewRow row = base.CreateRow(-1, -1, DataControlRowType.Header, DataControlRowState.Normal);

//convert the exisiting columns into an array and initialize

DataControlField[] fields = new DataControlField[this.Columns.Count];

this.Columns.CopyTo(fields, 0);

this.InitializeRow(row, fields);

table.Rows.Add(row);

//create the empty row

row = new GridViewRow(-1, -1, DataControlRowType.DataRow, DataControlRowState.Normal);

TableCell cell = new TableCell();

cell.ColumnSpan = this.Columns.Count;

cell.Width = Unit.Percentage(100);

cell.Controls.Add(new LiteralControl(EmptyTableRowText));

row.Cells.Add(cell);

table.Rows.Add(row);

if (this.ShowFooter)

{

//create a new footer row

GridViewRow rowFooter = base.CreateRow(-1, -1, DataControlRowType.Footer, DataControlRowState.Normal);

//convert the exisiting columns into an array and initialize

DataControlField[] fieldsFooter = new DataControlField[this.Columns.Count];

this.Columns.CopyTo(fieldsFooter, 0);

this.InitializeRow(rowFooter, fieldsFooter);

table.Rows.Add(rowFooter);

}

this.Controls.Add(table);

GridViewRow testFooter=this.FooterRow; //This is for testing that Footer is NULL

}

return numRows;

}

When I press a Buttom in page, I have this code:

But the result is that FooterRow is null.

Any idea why?

Thank you

Here is the solution thanks to CISCBrain

Hi

How can I use the code u posted? Where to a put it and how do a set it to show the header and footer in my custom GridView?

Cheers

This looks like a great way to extend the gridview control.

However, as soon as I extend the GridView, the StyleSheetTheme doesn't kick in.

To make sure, I tried to extend the GridView without adding ANY code (no overrides, no new properties, nothing). The theme disappears for my custom control anyway, but it works fine for other gridviews on the same page!

Any idea's why? 

I'm running into the same theme issue. Any resolution to this in the last 2 years?

StephenSkinner:

I'm running into the same theme issue. Any resolution to this in the last 2 years?

You have to write a skin with the tag name of your new control and not use <asp:GridView> skin (for example <uc1:NewGridView> ...)

 Hi,

I currently have a problem with disabling header (or some controls in header) when grid is empty. Actual behavior is that, when grid is empty, setting HeaderRow.Enabled to false does not disable it on first post-back, but only on the second. I cannot figure out what the problem is.