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hi,

I have an grid view displaying 5 rows per page. Also i have an button to add an extra row, if user wants.

My problem is While i change the page number to current page to next page i can't access the row in next page. Actually i use foreach() loop to access all rows in the grid. but while i run this loop it can't find the row index "5" which was in second page. It throws an error like "Object reference NULL".

My code is...

C#
protected void Grid_Purchase_PageIndexChanging(object sender, GridViewPageEventArgs e)
   {
       Grid_Purchase.PageIndex = e.NewPageIndex;
       Grid_Purchase.DataSource = Fill(); // Here i fill all rows into grid, error comes from here.
       Grid_Purchase.DataBind();
   }


My fill() call....

public DataTable Fill()
{
DataTable dt = new DataTable("items");
dt.Columns.Add("sno", typeof(int));
dt.Columns.Add("Prod_id", typeof(string));
dt.Columns.Add("Prod_name", typeof(string));
dt.Columns.Add("Prod_size", typeof(string));
dt.Columns.Add("Prod_qty", typeof(string));
dt.Columns.Add("Prod_Per_amt", typeof(string));
dt.Columns.Add("Prod_amt", typeof(string));

for (int i = 0; i < totalnumberofrowsin_Grid;i++ )
{
DataRow dr = dt.NewRow();
System.Web.UI.WebControls.TextBox txt_Prodid = (System.Web.UI.WebControls.TextBox)(Grid_Purchase.Rows[i].FindControl("txt_grd_Pid"));
System.Web.UI.WebControls.DropDownList txt_Prodname = (System.Web.UI.WebControls.DropDownList)(Grid_Purchase.Rows[i].FindControl("txt_grd_ProdName"));
System.Web.UI.WebControls.TextBox txt_Prodsize = (System.Web.UI.WebControls.TextBox)(Grid_Purchase.Rows[i].FindControl("txt_grd_size"));
System.Web.UI.WebControls.TextBox txt_Prodqty = (System.Web.UI.WebControls.TextBox)(Grid_Purchase.Rows[i].FindControl("txt_grd_qty"));
System.Web.UI.WebControls.TextBox txt_Prodperamt = (System.Web.UI.WebControls.TextBox)(Grid_Purchase.Rows[i].FindControl("txt_grd_piece_amt"));
System.Web.UI.WebControls.TextBox txt_Prodamt = (System.Web.UI.WebControls.TextBox)(Grid_Purchase.Rows[i].FindControl("txt_grd_amt"));
dr[0] = i + 1;
dr[1] = txt_Prodid.Text.ToString();
dr[2] = txt_Prodname.Text.ToString();
dr[3] = txt_Prodsize.Text.ToString();
dr[4] = txt_Prodqty.Text.ToString();
dr[5] = txt_Prodperamt.Text.ToString();
dr[6] = txt_Prodamt.Text.ToString();
dt.Rows.Add(dr);
}
return dt;
}

Please give me your suggestions.
Posted
Updated 6-Jul-11 20:31pm
v2
Comments
[no name] 7-Jul-11 2:17am
   
show full code where and how u use foreach loop etc...
J.Karthick 7-Jul-11 2:31am
   
Check i'm update my fill()

hey man..Whats the need of binding the gridview inside PageIndexChanging event...Bind it in page load or other events...

For accessing rows in other page you only hv tp set "allow paging=true" and set the page index..
   
v2
Comments
J.Karthick 7-Jul-11 2:29am
   
I dont want to fill my grid? Then how can i change my page? Please explain...Am newbie
Mathews Davis 7-Jul-11 2:41am
   
Ha...It doesnt matter man..Jus fill the grid and set paging to true and also set the no: of rows you want to see on one page..thats all..Y so complications!!!!!!!!
J.Karthick 7-Jul-11 2:55am
   
Without pageindexchanging event its not change my page....its remains on same page but page number alone came at the bottom.
Hi,
fill the grid in page load
regards,
shefeek
   
Comments
J.Karthick 7-Jul-11 3:04am
   
ya...i filled by condition
if(!Ispostback)
{
fill();
}
hi,

please use gridview bind function on page load and then use in page index changing event.
hope it works.
   
Comments
J.Karthick 7-Jul-11 3:05am
   
ya...i used it with postback condition...but no luck

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