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asp.net datagrid control : Customizing pager/header/footer
parts of the datagrid. Any ideas?
Hi,
In the ItemDataBound event of the datagrid, you can add the controls to the datagrid header cells programmatically, or you can take a look at HeaderTemplates. Instead of giving you a link, I'll just give you the google search URL: http://www.google.com/search?q=asp.net+datagrid+headertemplate&btnG=Search&hs=Gpg&hl=en&lr=&safe=off&client=firefox-a&rls=org.mozilla%3Aen-US%3Aofficial HTH -Altaf -------------------------------------------------------------------------------- All that glitters has a high refractive index. www.mendhak.com [quoted text, click to view] "Tumurbaatar S." <spam_tumur@magicnet.mn> wrote in message news:u%23w5PxQ4FHA.1416@TK2MSFTNGP09.phx.gbl... >I need to put web controls inside pager, header or footer > parts of the datagrid. Any ideas? > >
Thank you!
I've added controls to my datagrid's footer and pager. And now I can customize them at item's Create or DataBound events. But I cannot find a method to access these controls after, for example, after postback. DataGrid.Items contains only normal item rows. The header/footer/pagers are not included in this collection. My datagrid has several controls on the footer row and I do postback using some button. And within this button's Click event handler I need to examine content of these controls. Any ideas? Also, in several articles about adding controls to the pager, for example, I saw that before dynamically adding a control, authors check out whether this control was added in prior round trips. They says that the datagrid can save previously added control and without checking this, it may lead to duplicate controls. In my code I don't check it and all work normally: no duplicated/doubled controls. Anybody can explain this? [quoted text, click to view] "S.M. Altaf [MVP]" <smaltaf@PLEASEDONTSPAMMEmsn.com> wrote in message news:exVJbhU4FHA.1140@tk2msftngp13.phx.gbl... > Hi, > > In the ItemDataBound event of the datagrid, you can add the controls to > the datagrid header cells programmatically, or you can take a look at > HeaderTemplates. > > Instead of giving you a link, I'll just give you the google search URL: > > http://www.google.com/search?q=asp.net+datagrid+headertemplate&btnG=Search&hs=Gpg&hl=en&lr=&safe=off&client=firefox-a&rls=org.mozilla%3Aen-US%3Aofficial > > HTH > > -Altaf > -------------------------------------------------------------------------------- > All that glitters has a high refractive index. > www.mendhak.com > > > "Tumurbaatar S." <spam_tumur@magicnet.mn> wrote in message > news:u%23w5PxQ4FHA.1416@TK2MSFTNGP09.phx.gbl... >>I need to put web controls inside pager, header or footer >> parts of the datagrid. Any ideas? >> >> > >
That isn't very difficult.
Loop through the DataGridItemCollection. Start by looking for ItemType = Header. In the header, you can go through each cell and do a .FindControl() for the control that you have in your header (and assuming you have given each control an ID). CTYpe() the control to the control type that you put there, and then access the values that you want. HTH ALtaf -------------------------------------------------------------------------------- All that glitters has a high refractive index. www.mendhak.com [quoted text, click to view] "Tumurbaatar S." <spam_tumur@magicnet.mn> wrote in message news:%237j1C$E5FHA.692@TK2MSFTNGP11.phx.gbl... > Thank you! > I've added controls to my datagrid's footer and pager. And now I can > customize them at item's Create or DataBound events. But I cannot find > a method to access these controls after, for example, after postback. > DataGrid.Items contains only normal item rows. The header/footer/pagers > are not included in this collection. My datagrid has several controls > on the footer row and I do postback using some button. And within > this button's Click event handler I need to examine content of these > controls. Any ideas? > Also, in several articles about adding controls to the pager, for example, > I saw that before dynamically adding a control, authors check out whether > this control was added in prior round trips. They says that the datagrid > can save previously added control and without checking this, it may > lead to duplicate controls. In my code I don't check it and all work > normally: no duplicated/doubled controls. Anybody can explain this? > > > > "S.M. Altaf [MVP]" <smaltaf@PLEASEDONTSPAMMEmsn.com> wrote in message > news:exVJbhU4FHA.1140@tk2msftngp13.phx.gbl... >> Hi, >> >> In the ItemDataBound event of the datagrid, you can add the controls to >> the datagrid header cells programmatically, or you can take a look at >> HeaderTemplates. >> >> Instead of giving you a link, I'll just give you the google search URL: >> >> http://www.google.com/search?q=asp.net+datagrid+headertemplate&btnG=Search&hs=Gpg&hl=en&lr=&safe=off&client=firefox-a&rls=org.mozilla%3Aen-US%3Aofficial >> >> HTH >> >> -Altaf >> -------------------------------------------------------------------------------- >> All that glitters has a high refractive index. >> www.mendhak.com >> >> >> "Tumurbaatar S." <spam_tumur@magicnet.mn> wrote in message >> news:u%23w5PxQ4FHA.1416@TK2MSFTNGP09.phx.gbl... >>>I need to put web controls inside pager, header or footer >>> parts of the datagrid. Any ideas? >>> >>> >> >> > >
From MSDN/.NET Reference:
"...Note Only items bound to the data source are contained in the Items collection. The header, footer, and separator are not included in the collection....". What collection do you mean? [quoted text, click to view] "S.M. Altaf [MVP]" <smaltaf@PLEASEDONTSPAMMEmsn.com> wrote in message news:Oaeti3G5FHA.1028@TK2MSFTNGP11.phx.gbl... > That isn't very difficult. > > Loop through the DataGridItemCollection. Start by looking for ItemType = > Header. In the header, you can go through each cell and do a > .FindControl() for the control that you have in your header (and assuming > you have given each control an ID). CTYpe() the control to the control > type that you put there, and then access the values that you want. > > HTH > ALtaf > -------------------------------------------------------------------------------- > All that glitters has a high refractive index. > www.mendhak.com > > > "Tumurbaatar S." <spam_tumur@magicnet.mn> wrote in message > news:%237j1C$E5FHA.692@TK2MSFTNGP11.phx.gbl... >> Thank you! >> I've added controls to my datagrid's footer and pager. And now I can >> customize them at item's Create or DataBound events. But I cannot find >> a method to access these controls after, for example, after postback. >> DataGrid.Items contains only normal item rows. The header/footer/pagers >> are not included in this collection. My datagrid has several controls >> on the footer row and I do postback using some button. And within >> this button's Click event handler I need to examine content of these >> controls. Any ideas? >> Also, in several articles about adding controls to the pager, for >> example, >> I saw that before dynamically adding a control, authors check out whether >> this control was added in prior round trips. They says that the datagrid >> can save previously added control and without checking this, it may >> lead to duplicate controls. In my code I don't check it and all work >> normally: no duplicated/doubled controls. Anybody can explain this? >> >> >> >> "S.M. Altaf [MVP]" <smaltaf@PLEASEDONTSPAMMEmsn.com> wrote in message >> news:exVJbhU4FHA.1140@tk2msftngp13.phx.gbl... >>> Hi, >>> >>> In the ItemDataBound event of the datagrid, you can add the controls to >>> the datagrid header cells programmatically, or you can take a look at >>> HeaderTemplates. >>> >>> Instead of giving you a link, I'll just give you the google search URL: >>> >>> http://www.google.com/search?q=asp.net+datagrid+headertemplate&btnG=Search&hs=Gpg&hl=en&lr=&safe=off&client=firefox-a&rls=org.mozilla%3Aen-US%3Aofficial >>> >>> HTH >>> >>> -Altaf >>> -------------------------------------------------------------------------------- >>> All that glitters has a high refractive index. >>> www.mendhak.com >>> >>> >>> "Tumurbaatar S." <spam_tumur@magicnet.mn> wrote in message >>> news:u%23w5PxQ4FHA.1416@TK2MSFTNGP09.phx.gbl... >>>>I need to put web controls inside pager, header or footer >>>> parts of the datagrid. Any ideas? >>>> >>>> >>> >>> >> >> > >
Hi, Tumurbaatar. You are right. Only data-bound items are included in the
Items collection. For instance, to accessing LinkButton control in the 1. Header DataGridItem item = (DataGridItem)DataGrid1.Controls[0].Controls[0]; LinkButton lbtnHeader = (LinkButton)item.FindControl("lbtnInHeader"); 1. Footer DataGridItem item = (DataGridItem)DataGrid1.Controls[0].Controls[DataGrid1.Controls[0].Controls.Count-2]; LinkButton lbtnFooter = (LinkButton)item.FindControl("lbtnInFooter"); 1. Pager DataGridItem item = (DataGridItem)DataGrid1.Controls[0].Controls[DataGrid1.Controls[0].Controls.Count-1]; LinkButton lbtnPager = (LinkButton)item.FindControl("lbtnInPager"); The DataGrid1.Controls[0] refers to the DataGridTable in the page hierarchy control tree. Take note that, if the pager is implemented, the footer is the second last DataGridItem control, otherwise I would be the last one, always.
Got an error: Specified argument was out of the range of valid values.
Parameter name: index. On the 1st Page_Load event my DataGrid is empty. DataGrid1.Controls.Count returns 0, i.e. DataGrid1.Controls[0] does not exist. Why? There's a DropDownList in my DataGrid's footer and I need to populate list items from the Page_Load(). Referencing DataGrid1.Controls[0] after postback works: no exception raised, items populated normally. [quoted text, click to view] "alvinz_c" <alvinzc@discussions.microsoft.com> wrote in message news:6445E26A-21A6-4F2C-A6C0-0ECCCAE538E5@microsoft.com... > Hi, Tumurbaatar. You are right. Only data-bound items are included in the > Items collection. For instance, to accessing LinkButton control in the > > 1. Header > DataGridItem item = (DataGridItem)DataGrid1.Controls[0].Controls[0]; > LinkButton lbtnHeader = (LinkButton)item.FindControl("lbtnInHeader"); > > > 1. Footer > DataGridItem item = > (DataGridItem)DataGrid1.Controls[0].Controls[DataGrid1.Controls[0].Controls.Count-2]; > LinkButton lbtnFooter = (LinkButton)item.FindControl("lbtnInFooter"); > > > 1. Pager > DataGridItem item = > (DataGridItem)DataGrid1.Controls[0].Controls[DataGrid1.Controls[0].Controls.Count-1]; > LinkButton lbtnPager = (LinkButton)item.FindControl("lbtnInPager"); > > > The DataGrid1.Controls[0] refers to the DataGridTable in the page > hierarchy > control tree. Take note that, if the pager is implemented, the footer is > the > second last DataGridItem control, otherwise I would be the last one, > always. > > > Hope this helps...
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