Gridview Data not binded on second time execution.

[hydson]

Hi,

I have two gridviews to which data is binded when page is not posted back.

when i run for first time the data is binded to gridview, and when i run next time the data is not binded to grid view.

the code is:


public partial class _Default : System.Web.UI.P age

{

public static DataTable tableGrid1 = new DataTable();

protected void Page_Load(objec t sender, EventArgs e)

{

if (!IsPostBack)

{

BindData();

}

}



public void BindData()

{



DataColumn columnGrid1 = new DataColumn(); // Binding data to the tableGrid1

columnGrid1.Col umnName = "TeamName";

tableGrid1.Colu mns.Add(columnG rid1);



DataRow dr1 = tableGrid1.NewR ow();

dr1[0] = "AAAAAAA";

tableGrid1.Rows .Add(dr1);

DataRow dr2 = tableGrid1.NewR ow();

dr2[0] = "BBBBBBBB";

tableGrid1.Rows .Add(dr2);

DataRow dr3 = tableGrid1.NewR ow();

dr3[0] = "CCCCCCC";

tableGrid1.Rows .Add(dr3);

DataRow dr4 = tableGrid1.NewR ow();

dr4[0] = "DDDDDDDDD" ;

tableGrid1.Rows .Add(dr4);

DataRow dr5 = tableGrid1.NewR ow();

dr5[0] = "EEEEEEEEE" ;

tableGrid1.Rows .Add(dr5);



tableGrid1.Rows .Add(tableGrid1 .NewRow());



GridView1.DataS ource = tableGrid1;

GridView1.DataB ind();

}

}



when i run second time without rebuild it is not working

pls help me...

i m going mad !!!

bye
hydson

[int08h]

set a breakpoint at line "if (!IsPostBack)" and observe whether IsPostBack is true or false, if it is true the second time you refresh the page, it is majorly a problem with your web browser

[dip_developer]

Hi,

I have two gridviews to which data is binded when page is not posted back.

when i run for first time the data is binded to gridview, and when i run next time the data is not binded to grid view.

the code is:


public partial class _Default : System.Web.UI.P age

{

public static DataTable tableGrid1 = new DataTable();

protected void Page_Load(objec t sender, EventArgs e)

{

if (!IsPostBack)

{

BindData();

}

}



public void BindData()

{



DataColumn columnGrid1 = new DataColumn(); // Binding data to the tableGrid1

columnGrid1.Col umnName = "TeamName";

tableGrid1.Colu mns.Add(columnG rid1);



DataRow dr1 = tableGrid1.NewR ow();

dr1[0] = "AAAAAAA";

tableGrid1.Rows .Add(dr1);

DataRow dr2 = tableGrid1.NewR ow();

dr2[0] = "BBBBBBBB";

tableGrid1.Rows .Add(dr2);

DataRow dr3 = tableGrid1.NewR ow();

dr3[0] = "CCCCCCC";

tableGrid1.Rows .Add(dr3);

DataRow dr4 = tableGrid1.NewR ow();

dr4[0] = "DDDDDDDDD" ;

tableGrid1.Rows .Add(dr4);

DataRow dr5 = tableGrid1.NewR ow();

dr5[0] = "EEEEEEEEE" ;

tableGrid1.Rows .Add(dr5);



tableGrid1.Rows .Add(tableGrid1 .NewRow());



GridView1.DataS ource = tableGrid1;

GridView1.DataB ind();

}

}



when i run second time without rebuild it is not working

pls help me...

i m going mad !!!

bye
hydson

check whether Gridview's EnableViewState property is True or False.......... ..if False ...make it to True

[hydson]

set a breakpoint at line "if (!IsPostBack)" and observe whether IsPostBack is true or false, if it is true the second time you refresh the page, it is majorly a problem with your web browser

hi thanks

i checked second time and its true..

wat can be the problem wid the browser ???

thanks

hydson :-)

[hydson]

check whether Gridview's EnableViewState property is True or False.......... ..if False ...make it to True

hi thanks a lot

enableview state is true only

pls advice further...

bye

hydson.

[kunal pawar]

Use ur bind function out of !Ispostback
or

define ur datatable object tablegrid in bind function

[hydson]

Use ur bind function out of !Ispostback
or

define ur datatable object tablegrid in bind function

hi i want to give full description of wat i am doing.

i have 2 grdiviews .

one is assigned another unassigned

i have some teams binded to grid1 . now on click n dbl click i need to bind them to grid2.

on running all the teams are binded to grid1. and click n dbl click they are binded to grid2

now if i close the window. and do start without debugging i m not finding any data in grid1.



pls go thru dis code

public partial class _Default : System.Web.UI.P age, IPostBackEventH andler

{

// Declaration of tables and static variables

public static DataTable tableGrid1 = new DataTable();pub lic static DataTable tableGrid2 = new DataTable();


DataColumn columnGrid2 = new DataColumn();

static int j1 = 0;public static DataSet ds = new DataSet();


protected void Page_Load(objec t sender, EventArgs e)
{



if (j1 == 0)
{

columnGrid2.Col umnName = "TeamName";
tableGrid2.Colu mns.Add(columnG rid2);

tableGrid2.Rows .Add(tableGrid2 .NewRow());

GridView2.DataS ource = tableGrid2;

GridView2.DataB ind();

j1++;

DataColumn columnGrid1 = new DataColumn(); // Binding data to the tableGrid1

columnGrid1.Col umnName = "TeamName";
tableGrid1.Colu mns.Add(columnG rid1);

DataRow dr1 = tableGrid1.NewR ow();dr1[0] = "Sales";
tableGrid1.Rows .Add(dr1);

DataRow dr2 = tableGrid1.NewR ow();

dr2[0] = "Deployment ";
tableGrid1.Rows .Add(dr2);

DataRow dr3 = tableGrid1.NewR ow();dr3[0] = "Maintenanc e";
tableGrid1.Rows .Add(dr3);

DataRow dr4 = tableGrid1.NewR ow();

dr4[0] = "Marketing" ;
tableGrid1.Rows .Add(dr4);

DataRow dr5 = tableGrid1.NewR ow();dr5[0] = "Production ";
tableGrid1.Rows .Add(dr5);

tableGrid1.Rows .Add(tableGrid1 .NewRow());

ds.Tables.Add(t ableGrid1);

GridView1.DataS ource = ds;

GridView1.DataB ind();

}



}

protected DataTable deleteRowGrid1( string index, DataTable sourceTable) //function to delete a row in grid1

{

for (int i = 0; i < sourceTable.Row s.Count; i++)
{

if (i == int.Parse(index ))
{

sourceTable.Row s.RemoveAt(i);

}



}

tableGrid1 = sourceTable;

return sourceTable;
}

protected DataTable addNewRowGrid2( ) // function to add a row to grid2

{

DataRow newRow = tableGrid2.NewR ow();string hdnRowData = hdn2.Value.ToSt ring();
newRow[0] = hdnRowData;

tableGrid2.Rows .Add(newRow);

return tableGrid2;
}

protected void Button1_Click(o bject sender, EventArgs e) // ButtonClick event which deletes selected row from grid1 and adds to Grid2

{

string hdnRowIndex = hdn1.Value.ToSt ring();


foreach (GridViewRow row in GridView1.Rows)
{

if (row.RowIndex == int.Parse(hdnRo wIndex))
{

GridView1.DataS ource = deleteRowGrid1( hdnRowIndex, tableGrid1);

GridView1.DataB ind();



GridView2.DataS ource = addNewRowGrid2( ); // To add the selected row into assigned list

GridView2.DataB ind();

}

}



}

protected void GridView1_RowDa taBound(object sender, GridViewRowEven tArgs e)
{

if (e.Row.RowType == DataControlRowT ype.DataRow)
{

e.Row.Attribute s.Add("onclick" , "SelectRowGrid1 ('" + e.Row.Cells[0].FindControl("l bl").ClientID + "'," + e.Row.DataItemI ndex.ToString() + ")");e.Row.Attr ibutes.Add("ond blclick", Page.ClientScri pt.GetPostBackE ventReference(t his, "1"));
}

}



public void RaisePostBackEv ent(string eventArgument)
{

if (!string.IsNull OrEmpty(eventAr gument))
{

if (eventArgument == "1")
{

selectGrid1();

}

if (eventArgument == "2")
{

selectGrid2();

}

}

}

public void selectGrid1() // function to select a row on double click and delete from Grid1 and add to Grid2

{

string hdnRowIndex = hdn1.Value.ToSt ring();foreach (GridViewRow row in GridView1.Rows)
{

if (row.RowIndex == int.Parse(hdnRo wIndex))
{

GridView1.DataS ource = deleteRowGrid1( hdnRowIndex, tableGrid1);

GridView1.DataB ind();



GridView2.DataS ource = addNewRowGrid2( ); // To add the selected row to Grid2

GridView2.DataB ind();

}

}



}

protected void GridView2_RowDa taBound(object sender, GridViewRowEven tArgs e)
{

if (e.Row.RowType == DataControlRowT ype.DataRow)
{

e.Row.Attribute s.Add("onclick" , "SelectRowGrid2 ('" + e.Row.Cells[0].FindControl("l bl2").ClientID + "'," + e.Row.DataItemI ndex.ToString() + ")");e.Row.Attr ibutes.Add("ond blclick", Page.ClientScri pt.GetPostBackE ventReference(t his, "2"));
}

}



public void selectGrid2() // function to select a row on double click and delete from Grid2 and add to Grid1

{

string hdnRowIndex = hdn4.Value.ToSt ring();tableGri d2.Rows.RemoveA t(int.Parse(hdn RowIndex));


GridView2.DataS ource = tableGrid2;

GridView2.DataB ind();

GridView1.DataS ource = addNewRowGrid1( );

GridView1.DataB ind();

}

protected void Button3_Click(o bject sender, EventArgs e) // ButtonClik event which delete selected row from Grid2 and add to Grid1

{

string hdnRowIndex = hdn4.Value.ToSt ring();tableGri d2.Rows.RemoveA t(int.Parse(hdn RowIndex));


GridView2.DataS ource = tableGrid2;

GridView2.DataB ind();

GridView1.DataS ource = addNewRowGrid1( );

GridView1.DataB ind();

}

protected DataTable addNewRowGrid1( ) // Function to add a row to Grid1

{

DataRow newRow =tableGrid1.New Row();string hdnRowData = hdn3.Value.ToSt ring();
newRow[0] = hdnRowData;

tableGrid1.Rows .Add(newRow);



return tableGrid1;
}

protected void Button2_Click(o bject sender, EventArgs e) // ButtonClick event to delete all rows from Grid1 and add to Grid2

{

int r = tableGrid1.Rows .Count;while (r > 0)
{

DataRow newrow = tableGrid2.NewR ow();
newrow[0] = tableGrid1.Rows[0].ItemArray.GetV alue(0).ToStrin g();

if (tableGrid1.Row s[0].ItemArray.GetV alue(0).ToStrin g() != "")
{

tableGrid2.Rows .Add(newrow);

}

tableGrid1.Rows[0].Delete();

r--;

}

if (tableGrid1.Row s.Count == 0)
{

tableGrid1.Rows .Add(tableGrid1 .NewRow());

}

GridView1.DataS ource =tableGrid1;

GridView1.DataB ind();

GridView2.DataS ource = tableGrid2;

GridView2.DataB ind();

}

protected void Button4_Click(o bject sender, EventArgs e) // ButtonClick event to delete all rows from Grid2 and add to Grid1

{

int r = tableGrid2.Rows .Count;while (r > 0)
{

DataRow newrow =tableGrid1.New Row();
newrow[0] = tableGrid2.Rows[0].ItemArray.GetV alue(0).ToStrin g();

if (tableGrid2.Row s[0].ItemArray.GetV alue(0).ToStrin g() != "")
{

tableGrid1.Rows .Add(newrow);

}

tableGrid2.Rows[0].Delete();

r--;

}

if (tableGrid2.Row s.Count == 0)
{

tableGrid2.Rows .Add(tableGrid2 .NewRow());

}

GridView2.DataS ource = tableGrid2;

GridView2.DataB ind();

GridView1.DataS ource = tableGrid1;

GridView1.DataB ind();

}

}

when i close n do start without debugging den no data is present in grid1.



enable view state for grid1 is true only..