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asp.net : DataGrid Paging doesnt page!
Hi
The paging numbers of my DataGrid dont actually page. What can be the cause? Everyting else seems to work. Thanks Dee
What code have you entered into the PageIndexChanged event handler?
[quoted text, click to view] "Dee" <dee@home> wrote in message news:%23Dymml8QFHA.2736@TK2MSFTNGP09.phx.gbl... > Hi > The paging numbers of my DataGrid dont actually page. What can be the > cause? > Everyting else seems to work. > Thanks > Dee > >
No problem. Good luck.
[quoted text, click to view] "Dee" <dee@home> wrote in message news:%23OBYtdHRFHA.544@TK2MSFTNGP12.phx.gbl... > Wow > Great explanation! Thanks very much. > Dee > > "Scott M." <s-mar@nospam.nospam> wrote in message > news:#b$kzHCRFHA.3832@TK2MSFTNGP10.phx.gbl... >> You must ALWAYS call the databind method after making any kind of change > to >> the datagrid that affects what data the grid is showing. >> >> The reason you'd have to click the pager twice without the extra databind >> call is that the grid uses ViewState to remember, not only the data that > is >> was showing, but also other "state" information such as what page of data >> was showing, what sort order was in effect, what row was being edited or > was >> selected, etc. >> >> Without the databind call, the grid is bound to its data in Page_Load >> (that's where you do have a databind call, right?) and the first click > sets >> the page correctly but doesn't update the grid with the new page of data >> because no databind call took place AFTER setting the page to show, the >> second click causes the grid to bind to its data in Page_Load as well, >> but >> now the grid is "remembering" via ViewState what page of data to display >> BEFORE the databind call takes place. >> >> In general, your page load event handler should look like this: >> >> datagrid.datasource = someDataSource >> If Not IsPostBack Then >> datagrid.databind >> End If >> >> and then at the end of EACH and EVERY datagrid event handler where the > data >> would change in some way (sortCommand, PageIndexChanged, EditCommand, >> DeleteCommand, SortCommand, CancelCommand) >> >> datagrid.databind >> >> >> >> "Dee" <dee@home> wrote in message >> news:%23mcZSw8QFHA.576@TK2MSFTNGP15.phx.gbl... >> > Thanks Scott, >> > I dodnt know I needd to handle that event. >> > It workd now. I added: >> > >> > DataGrid1.CurrentPageIndex = e.NewPageIndex >> > DataGrid1.DataBind() >> > >> > It's intersting that the paging works without thr DataBind() call but > have >> > to click on the page TWICE! >> > >> > >> > "Scott M." <s-mar@nospam.nospam> wrote in message >> > news:uiT9Co8QFHA.2736@TK2MSFTNGP09.phx.gbl... >> >> What code have you entered into the PageIndexChanged event handler? >> >> >> >> >> >> "Dee" <dee@home> wrote in message >> >> news:%23Dymml8QFHA.2736@TK2MSFTNGP09.phx.gbl... >> >> > Hi >> >> > The paging numbers of my DataGrid dont actually page. What can be >> >> > the >> >> > cause? >> >> > Everyting else seems to work. >> >> > Thanks >> >> > Dee >> >> > >> >> > >> >> >> >> >> > >> > >> >> > >
Thanks Scott,
I dodnt know I needd to handle that event. It workd now. I added: DataGrid1.CurrentPageIndex = e.NewPageIndex DataGrid1.DataBind() It's intersting that the paging works without thr DataBind() call but have to click on the page TWICE! [quoted text, click to view] "Scott M." <s-mar@nospam.nospam> wrote in message news:uiT9Co8QFHA.2736@TK2MSFTNGP09.phx.gbl... > What code have you entered into the PageIndexChanged event handler? > > > "Dee" <dee@home> wrote in message > news:%23Dymml8QFHA.2736@TK2MSFTNGP09.phx.gbl... > > Hi > > The paging numbers of my DataGrid dont actually page. What can be the > > cause? > > Everyting else seems to work. > > Thanks > > Dee > > > > > >
HI
set the property of datagrid to AllowPaging=3D"True" then on the grid_page index changed event write the code grid.CurrentPageIndex =3D e.NewPageIndex ; and then write the code for connecting to the datbase [quoted text, click to view] "Dee" <dee@home> wrote in message =
news:%23Dymml8QFHA.2736@TK2MSFTNGP09.phx.gbl... > Hi > The paging numbers of my DataGrid dont actually page. What can be the = cause? > Everyting else seems to work. > Thanks > Dee >=20
You must ALWAYS call the databind method after making any kind of change to
the datagrid that affects what data the grid is showing. The reason you'd have to click the pager twice without the extra databind call is that the grid uses ViewState to remember, not only the data that is was showing, but also other "state" information such as what page of data was showing, what sort order was in effect, what row was being edited or was selected, etc. Without the databind call, the grid is bound to its data in Page_Load (that's where you do have a databind call, right?) and the first click sets the page correctly but doesn't update the grid with the new page of data because no databind call took place AFTER setting the page to show, the second click causes the grid to bind to its data in Page_Load as well, but now the grid is "remembering" via ViewState what page of data to display BEFORE the databind call takes place. In general, your page load event handler should look like this: datagrid.datasource = someDataSource If Not IsPostBack Then datagrid.databind End If and then at the end of EACH and EVERY datagrid event handler where the data would change in some way (sortCommand, PageIndexChanged, EditCommand, DeleteCommand, SortCommand, CancelCommand) datagrid.databind [quoted text, click to view] "Dee" <dee@home> wrote in message news:%23mcZSw8QFHA.576@TK2MSFTNGP15.phx.gbl... > Thanks Scott, > I dodnt know I needd to handle that event. > It workd now. I added: > > DataGrid1.CurrentPageIndex = e.NewPageIndex > DataGrid1.DataBind() > > It's intersting that the paging works without thr DataBind() call but have > to click on the page TWICE! > > > "Scott M." <s-mar@nospam.nospam> wrote in message > news:uiT9Co8QFHA.2736@TK2MSFTNGP09.phx.gbl... >> What code have you entered into the PageIndexChanged event handler? >> >> >> "Dee" <dee@home> wrote in message >> news:%23Dymml8QFHA.2736@TK2MSFTNGP09.phx.gbl... >> > Hi >> > The paging numbers of my DataGrid dont actually page. What can be the >> > cause? >> > Everyting else seems to work. >> > Thanks >> > Dee >> > >> > >> >> > >
Wow
Great explanation! Thanks very much. Dee [quoted text, click to view] "Scott M." <s-mar@nospam.nospam> wrote in message news:#b$kzHCRFHA.3832@TK2MSFTNGP10.phx.gbl... > You must ALWAYS call the databind method after making any kind of change to > the datagrid that affects what data the grid is showing. > > The reason you'd have to click the pager twice without the extra databind > call is that the grid uses ViewState to remember, not only the data that is > was showing, but also other "state" information such as what page of data > was showing, what sort order was in effect, what row was being edited or was > selected, etc. > > Without the databind call, the grid is bound to its data in Page_Load > (that's where you do have a databind call, right?) and the first click sets > the page correctly but doesn't update the grid with the new page of data > because no databind call took place AFTER setting the page to show, the > second click causes the grid to bind to its data in Page_Load as well, but > now the grid is "remembering" via ViewState what page of data to display > BEFORE the databind call takes place. > > In general, your page load event handler should look like this: > > datagrid.datasource = someDataSource > If Not IsPostBack Then > datagrid.databind > End If > > and then at the end of EACH and EVERY datagrid event handler where the data > would change in some way (sortCommand, PageIndexChanged, EditCommand, > DeleteCommand, SortCommand, CancelCommand) > > datagrid.databind > > > > "Dee" <dee@home> wrote in message > news:%23mcZSw8QFHA.576@TK2MSFTNGP15.phx.gbl... > > Thanks Scott, > > I dodnt know I needd to handle that event. > > It workd now. I added: > > > > DataGrid1.CurrentPageIndex = e.NewPageIndex > > DataGrid1.DataBind() > > > > It's intersting that the paging works without thr DataBind() call but have > > to click on the page TWICE! > > > > > > "Scott M." <s-mar@nospam.nospam> wrote in message > > news:uiT9Co8QFHA.2736@TK2MSFTNGP09.phx.gbl... > >> What code have you entered into the PageIndexChanged event handler? > >> > >> > >> "Dee" <dee@home> wrote in message > >> news:%23Dymml8QFHA.2736@TK2MSFTNGP09.phx.gbl... > >> > Hi > >> > The paging numbers of my DataGrid dont actually page. What can be the > >> > cause? > >> > Everyting else seems to work. > >> > Thanks > >> > Dee > >> > > >> > > >> > >> > > > > > >
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