Forms Data Controls :: Chackbox In Grid Disappears After Autopostback?
Jun 15, 2010
I have a Gridview control with a panel inside a template column and I dynamically add a checkbox control through code to the panel and the checkbox has autopost set. My problem is when I click the checkbox it dissappears on autopost back. I have tried to recreate the control again on the event OnDataBound but when I cast the sender as checkbox I get nothing. How can I not loose my checkbox on postback and why is (Checkbox)sender return nothing.
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Similar Messages:
Dec 25, 2010
i am developed a grid view using tmplate fields. i have done addition and deletion of row using java script and ajax(using web method). now i want to impliment the editing of the grid row using javascript without autopost back Here is the template field i am using.....
<asp:TemplateField HeaderText="EmailId">
<ItemTemplate>
<asp:Label ID="Label4" runat="server" Text='<%# Eval("EmailId")%>'></asp:Label>
</ItemTemplate>
<EditItemTemplate>
<asp:TextBox BorderStyle="None" ID="txtEmailId" runat="server" Text='<%# Eval("EmailId") %>' Width="80px"
Visible="true"></asp:TextBox>
</EditItemTemplate>
</asp:TemplateField>
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Oct 13, 2010
My dropdownlist having data from database added with the following item:
DropDownList.Items.Insert(0, new ListItem("Please select", "0"));
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Jan 11, 2011
here is my code
<asp:LinkButton ID="changeStatusLinkButton" runat="server" Text="Change status" />
<ajaxToolkit:ConfirmButtonExtender ID="cofirmButtonExtender" runat="server"
TargetControlID="changeStatusLinkButton"
DisplayModalPopupID="modalPopupExtender" ConfirmText="" Enabled="True" />
<ajaxToolkit:ModalPopupExtender ID="modalPopupExtender" runat="server"
[Code]....
and when I select something in my statusDropDownList, (it has AutoPostBack="true") and my modal popup disappears.
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Jan 16, 2011
i have one grid and one button when i click on that button then it expand and showing another grid under the row of parent grid how to do that.
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Jan 23, 2010
I'm binding a dataview to a GridView and am trying to use GridView Paging. When I click on one of the page numbers, the Grid disappears.
Code:
If Page.IsPostBack = False
GridView1.AutoGenerateColumns = False
GridView1.AllowPaging = True
GridView1.PageSize = 5
[code]...
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Feb 21, 2011
I have an asp:UpdatePanel in my .aspx page.Within the panel I have placed an infragistics ultrawebgrid control.Upon clicking a button (placed outside the panel) , I have to export the data in the grid to excel.I am using
UltraWebGridExcelExporter(Infragistics object) for this. The export will occur only with full postback.For this I have added a PostBack tigger for the button to the update panel.But once the export is complete, if I change the selected item in a dropdownlist(Autopostback="true") in the same page,the updatepanel gets invisible.
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Nov 2, 2010
I have a databound grid with a templated field column that is a checkbox. When the user checks the checkbox, it will autopostback and update the row to indicate the box's check state.
My first attempt was to simply use the OnCheckedChanged method, but when this gets called, I have no way to know which row the checkbox came from. Thus, I don't know which row to update.
Can anyone suggest a method to determine which row the checkbox that fired the oncheckedchanged event came from? Or can you suggest a better way to achieve what I need to do?
I cannot bind the checkbox to the data column because I do not want the checkbox disabled in select mode, and do not wish to require the user to enter edit mode to change the value. I also need all rows to be editable. So, the best route seems to be in a templated column.
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Mar 29, 2010
I am using an asp.net autopostback enabled dropdown list. Here i want to restrict the autopostback property fot the value "Select" in the ddl. I have used javascript for this purpose. but not working.My code look like this.
[Code]....
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Aug 9, 2010
I am running Visual Studio 2008 Version 9.0.30720.1. I created a Web App with a FromView and in IE7 it works great. My company pushed an upgrade to IE8 and all of a sudden when I run my Web App to test it, the formview completely dissapears. I tried running IE8 in Compalability View but it still does not work.
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Jul 12, 2010
when i add a rowdatabound event to a gridview, the pager disappears. when i remove
onrowdatabound="gridview1_rowdatabound"
from gridview, pager comes back to life.
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Jan 13, 2010
I have a gridview where in the users are allowed to edit certain data and there is an update on top of the page which will send out all the changes made inside the GridView. But, the problem is , as soon as the update button is clicked, the grid disappearsand no update is made. This problem occurs when the size of the data on the page is huge. When we have less amount of data on the gridview, It does update. But, when there is a huge amount of data on the gridview, it does not. We have tried to increase the page size on the server, but to no use.
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Apr 1, 2011
I have a gridview with daatsource from MembershipUserCollection. When my collection doesn't contain any records the gridview just disappears. I want to display the empty gridview indicating no records exist rather than the grid just become invisible.
How to make gridview always visible ?
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Jul 24, 2010
I'm trying to figure out why my gridview disappears when I trigger the rowediting event.
The Gridview:
[Code]....
The code-behind:
[Code]....
When I click on the edit linkbutton, the gridview disappears. What is going wrong?
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Oct 6, 2010
<asp:Repeater ID="rpProducts" runat="server" OnItemDataBound="rpProducts_OnItemDataBound" OnItemCommand="rpProducts_OnItemCommand">
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Jan 18, 2011
I use Server.Transfer("pagename", True) to navigate from a page where two dates have been selected to a page with a gridview that uses the dates to query the database and display the results. The gridview initially displays correctly but when I operate the select or sort it disappears.
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Feb 23, 2010
I've got a Gridview in which I use the RowDataBound handler to color the lines according to certain conditions
(ie if column x is value y then change the background-color of the row to z etc).
One problem though, as soon as I do a postback the coloring disappears altogether and all rows become white.
Is there some way around this so I can retain my background colors even after a postback?
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Jan 21, 2011
I am populating a column in a gridview with a dropdownlist as follows:
[Code]....
[Code]....
When I edit the gridrow, the dropdown is there and I can select a new item.
But I can't find the dropdown during the rowupdated event. The cell control says it's a Textbox. All of the other items in the row are fine and I can get the data back. But I can't get the DropDown item.
Here are some of the things I have tried in the RowUpdating event:
DropDownList test = (DropDownList)e.FindControl("ddlPeriod");
//null
DropDownList ddl = (DropDownList)GridView1.Rows[e.RowIndex].FindControl("ddlPeriod");
//Also null
var test = row.Cells[8].Controls[0];
//Says its a textbox.
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Sep 23, 2010
I have a grid which is getting bound from a dataset and the autogeneratecolumns prperty is set to true.
Now i have a menu control. And when i select a particular cell, I want to headertext of the cell selected should appear as the text of the menu item.
But because autogeneratecolumns = true, so i gridview.columns.count=0. So not able to get the header text.
The code goes as follows.
[Code]....
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Feb 18, 2011
I have a DropDownList in a GridView with AutoPostBack="true" and on SelectedIndexChanged fires an event.
[Code]....
Everything works fine across browsers as long as the user is scrolling through the DropDownList using a mouse.In IE8, things start to go haywire when the user is navigating the DropDownList using up/down arrows on the keyboard. The SelectedIndexChange event is fired with nearly every up/down key pressed. In Firefox 3 and Chrome 9, the behavior is more like what I would expect, that the event isn't fired until the user stops on DropDownList selection and hits the enter key.
Is there something that I should be doing in IE, short of setting AutoPostBack="false", so that the event is fired every time the up/down arrows are used on the keyboard?
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Jun 23, 2010
Have a GridView with a templated select button hidden and using
e.Row.Attributes.Add("onclick",Page.ClientScript.GetPostBackEventReference(this.grdMaster, "Select$" + e.Row.RowIndex.ToString())); to select a row .
When user like to update the datasource he will select one row from gridview then in selected indexchanged event i would display the selected row values beneath the form under the grid , Then user will update the contents displayed from grid and click an update button which is outside the grid . After updating the displayed row , i got to get the values of the next row in the grid and display them for next updation , i'e if users maually selects row 3 from grid then he can update the values using the update button and then on update click itself i'll have to display next row contents of row 4 and this process could go on .
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Mar 12, 2010
I have Parent/Child Grid (also called Nested Grids).
Parent Grid (PG) :: PG has two template fields. 1st template field has "Category ID" and 2nd template has Child Grid
Child Grid (CG) :: CG is populated in PG's RowDataBund event based on "Category ID". In CG's DataBound event, I am doing something which I need to display in CG's footer row.
Problem :: In the footer row of each CG, I have to show the "Category ID" which is in PG' row. How can I get hold of the PG's row which hascurrent nested grid (there will 'n' child grids, one for each 'Category ID' in the PG ) so I can read the "Category ID"
I was thinking if I could do something (DataBound event of CG) like this..
string catId = ChildGrid.Parent[get the index of the current row in PG].Cells[0].Text;
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Jun 1, 2010
i am trying to add subtotal in gridfooter with has grid inside grid
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Feb 2, 2011
I have an entity "Order", which contains a set of states. Every state has date and name.
I want show grid with all orders and in grid one column with last state of order. But I dont understand how to do it.
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Jul 6, 2010
I am trying to create a second grid in the same page with detailed info for a given record of the first Grid, but when I press select in the first grid nothing happens. I follwed everything I read.
<asp:GridView runat="server" AutoGenerateColumns="False"
DataSourceID="SqlDataSource1" style="margin-right: 0px" Width="659px"
AutoGenerateDeleteButton="True" AutoGenerateEditButton="True"
AllowSorting="True" DataKeyNames="accession_num,organ"
EnablePersistedSelection="True" EnableSortingAndPagingCallbacks="True" onselectedindexchanged="Unnamed1_SelectedIndexChanged"
>
<Columns>
<asp:BoundField DataField="organ" HeaderText="organ"
SortExpression="organ" />
<asp:BoundField DataField="weight" HeaderText="weight"
SortExpression="weight" />
<asp:BoundField DataField="unit" HeaderText="unit" SortExpression="unit" />
<asp:BoundField DataField="accession_num" HeaderText="accession_num"
ReadOnly="True" />
</Columns>
</asp:GridView>
<asp:SqlDataSource ID="SqlDataSource1" runat="server"
ConnectionString="<%$ ConnectionStrings:pdmstestConnectionString %>"
SelectCommand="GetGrossOrgan" SelectCommandType="StoredProcedure"
UpdateCommand="UpdateGrossOrgan" UpdateCommandType="StoredProcedure"
DeleteCommand="DELETE FROM [Pathology_Gross_Organ] WHERE [accession_num] = @accession_num AND [organ] = @original_organ"
OldValuesParameterFormatString="original_{0}"
> <SelectParameters>
<asp:ControlParameter ControlID="accession_num" Name="accession_num"
PropertyName="Text" Type="String"/>
</SelectParameters>
<DeleteParameters>
<asp:Parameter Name="accession_num" Type="String" />
<asp:Parameter Name="original_organ" Type="String"/>
</DeleteParameters>
<UpdateParameters>
<asp:Parameter Name="accession_num" Type="String"/>
<asp:Parameter Name="organ" Type="String"/>
<asp:Parameter Name="weight" Type="Int16" />
<asp:Parameter Name="unit" Type="String"/>
</UpdateParameters>
</asp:SqlDataSource>
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