asked on

Allow Paging on working GridView export

I have the following code that works to export a GridView to Excel:

HttpContext.Current.Response.Clear();

HttpContext.Current.Response.Cache.SetExpires(DateTime.UtcNow.AddDays(-1));
HttpContext.Current.Response.Cache.SetValidUntilExpires(false);
HttpContext.Current.Response.Cache.SetRevalidation(HttpCacheRevalidation.AllCaches);

HttpContext.Current.Response.AddHeader(
"content-disposition", string.Format("attachment; filename={0}", fileName));
HttpContext.Current.Response.ContentType = "application/ms-excel";

using (StringWriter sw = new StringWriter())
{
using (HtmlTextWriter htw = new HtmlTextWriter(sw))
{
// Create a form to contain the grid
Table table = new Table();

table.GridLines = gv.GridLines;

// add the header row to the table
if (gv.HeaderRow != null)
{
GridViewRow temp = new GridViewRow(0, 0, DataControlRowType.Header, DataControlRowState.Normal);
TableCell tempcell = new TableCell();
TableCell tempcell2 = new TableCell();
tempcell.Text = "WBS";
temp.Cells.Add(tempcell);
tempcell2.Text = "WBSTitle";
temp.Cells.Add(tempcell2);
table.Rows.Add(temp);
}

//add each of the data rows to the table
foreach (GridViewRow row in gv.Rows)
{
gv.AllowPaging = true;
GridViewRow temp = new GridViewRow(0, 0, DataControlRowType.Header, DataControlRowState.Normal);
TableCell tempcell = new TableCell();
TableCell tempcell2 = new TableCell();
tempcell.Text = row.Cells[3].Text;
tempcell2.Text = row.Cells[4].Text;
temp.Cells.Add(tempcell);
temp.Cells.Add(tempcell2);
table.Rows.Add(temp);
}

// render the table into the htmlwriter
table.RenderControl(htw);

// render the htmlwriter into the response
HttpContext.Current.Response.Write(sw.ToString());
HttpContext.Current.Response.End();
}
}

The issue I am having is that the GridView includes paging. However, the above code only displays the first page in a series of 4 pages on a Gridview. I cannot get the second through fourth pages to export to Excel.

Rick

Try changing this:

//add each of the data rows to the table
foreach (GridViewRow row in gv.Rows)
{
gv.AllowPaging = true;
GridViewRow temp = new GridViewRow(0, 0, DataControlRowType.Header, DataControlRowState.Normal);
TableCell tempcell = new TableCell();
TableCell tempcell2 = new TableCell();
tempcell.Text = row.Cells[3].Text;
tempcell2.Text = row.Cells[4].Text;
temp.Cells.Add(tempcell);
temp.Cells.Add(tempcell2);
table.Rows.Add(temp);
}

To this:

//add each of the data rows to the table

                gv.AllowPaging = false;
                foreach (GridViewRow row in gv.Rows)
                {
                    
                    GridViewRow temp = new GridViewRow(0, 0, DataControlRowType.Header, DataControlRowState.Normal);
                    TableCell tempcell = new TableCell();
                    TableCell tempcell2 = new TableCell();
                    tempcell.Text = row.Cells[3].Text;
                    tempcell2.Text = row.Cells[4].Text;
                    temp.Cells.Add(tempcell);
                    temp.Cells.Add(tempcell2);
                    table.Rows.Add(temp);
                }
                gv.AllowPaging = true;

Open in new window

zintech

ASKER

Unfortunately adding the Paging properties to the top and bottom of the loop did not help. It still only does the first page of all of the pages

ASKER CERTIFIED SOLUTION

Rick

membership

This solution is only available to members.

To access this solution, you must be a member of Experts Exchange.

Start Free Trial