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ASP.Net and C#

I have a GridView with paging. When I click a page number, the gridview disappears. If I run a method to display a different view and clear that view, then run another method to reverse the process - the new page is diaplayed.

ASP.NET
<asp:GridView ID="LastThirtyDaysGrid" runat="server" CssClass="expensesgrid" AutoGenerateColumns="false" AllowPaging="true" PageSize="10" OnPageIndexChanging="LastThirtyDaysReportGrid_PageIndexChanging" CellPadding="10" HorizontalAlign="Center"  />


C#
protected void LastThirtyDaysReportGrid_PageIndexChanging(object sender, GridViewPageEventArgs e)
{

    LastThirtyDaysGrid.PageIndex = e.NewPageIndex;
    LastThirtyDaysGrid.DataBind();
}


What I have tried:

I added
ASP.NET
EnableSortingAndPagingCallbacks="true"
.
I wanted to refresh the page so called
C#
Page_Load(null, null);
which did not cause any change.
Posted
Updated 20-Dec-22 10:24am
Comments
Richard Deeming 20-Dec-22 4:12am    
Where is the data source set? If you're setting it via code, you'll need to set it every time you bind the grid.
Chinger 20-Dec-22 15:40pm    
reportGridView is a GridView variable. It had the value of MonthToDateGrid when it's being populated initially

Originally set:

var dataAdapter = new SqlDataAdapter(command);
var dataTable = new DataTable();
dataAdapter.Fill(dataTable);

reportGridview.DataSource = dataTable;
reportGridview.DataBind();
ReportHeader.Text = reportTitle;

Page Change:
protected void MonthToDateGrid_PageIndexChanging(object sender, GridViewPageEventArgs e)
{

MonthToDateGrid.PageIndex = e.NewPageIndex;
MonthToDateGrid.DataBind();
}

1 solution

I think between both solutions it worked.

C#
protected void LastThirtyDaysReportGrid_PageIndexChanging(object sender, GridViewPageEventArgs e)
{
    GetThirtyDay(null, null);
    LastThirtyDaysGrid.PageIndex = e.NewPageIndex;
    LastThirtyDaysGrid.DataBind();
}


I added the first line of code within the function. It calls the function that originally sets the GridView's data.


C#
  protected void GetThirtyDay(object sender, EventArgs e)
  {
      GenerateReport("LastThirtyDaysExpenses", LastThirtyDaysGrid, "Last Thirty Days' Expenses");
  }



private void GenerateReport(string storedProcName, GridView reportGridview, string reportTitle)
  {
      ClearGridViews();

      try
      {
          using (var conn = new SqlConnection(connectionString))
          {
              var command = new SqlCommand();
              command.CommandText = storedProcName;
              command.Connection = conn;
              command.CommandType = CommandType.StoredProcedure;

              var dataAdapter = new SqlDataAdapter(command);
              var dataTable = new DataTable();
              dataAdapter.Fill(dataTable);

              reportGridview.DataSource = dataTable;
              reportGridview.DataBind();
              ReportHeader.Text = reportTitle;
          }
      }
      catch (Exception exp)
      {
          string help = exp.ToString();
      }
  }
 
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