Web Forms :: Unable To Find DropDown Control In Gridview In RowUpating Event
Sep 24, 2012
I have tried so many ways to code
1 :- string DepttManager = ((DropDownList)GridViewDepartment.Rows[e.RowIndex].FindControl("ddlDepartmentManager")).SelectedValue;
and
GridViewRow gRow = (GridViewRow)sender;
GridView grid = (GridView)gRow.NamingContainer;
grid.SelectedIndex = gRow.RowIndex;
gRow.FindControl("ddlDepartmentManager");
grid.SelectedIndex = -1;
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Jan 13, 2010
I am unable to find any control in row editing event of gridview that i have put in edit template. I have to populate the dropdown control so that in editing the user can select value from the control.
How ever i can access the controls in row updating .But i need it in row editing event.
Here is the code.
[Code]....
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Apr 21, 2010
I'm unable find check box control in my webpage.
When building the page I'm getting "checkbox null" and "false".
I'm pasting the code here.
[Code]....
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Dec 20, 2010
I have a Gridview which contains templated column that has 5 checkboxes in it. When you click on one checkbox, I want to uncheck the other 4.
I am using the Item Template for this. I don't want the user to have to Select a row, before clicking on the checkboxes. Here is my non-working code to uncheck the other checkboxes. I realize it's not "SelectedRow" that I want since there's no selected row, so how do I find the row containing the checkbox that fired off CheckChanged?
[code]....
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Jun 15, 2010
i want save the gridview in buttonsave event..
here i wrote the code like this
for (int i=0;i<gridview1.row.count;i++)
{
label lbl=(label)gridview1.rows[i].findcontrol("lbl");
Textbox txtname=(Textbox)gridview1.rows[i].findcontrol("txtname");
}
here i got the textbox value but am not getting label value how to get that label value..
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Jan 31, 2011
i tried something like this but did not work:
GridViewRow row = (GridViewRow)(((Repeater)e.CommandSource).NamingContainer);
Repeater _rpt1 = row.Cells[8].FindControl("rptReg") as Repeater;
error:
Unable to cast object of type 'System.Web.UI.WebControls.Button' to type 'System.Web.UI.WebControls.Repeater'.
is there a way i can have the below code in OnRowCommand event using GridView?
actually i am trying to delete the row from the gridview control and when the user click on it and i am grabbing the mulitple ids and passing to SP and update the table and databind the gridview
GridViewRow row = gv.SelectedRow;
Repeater _rpt = gv.Rows[e.RowIndex].Cells[8].FindControl("rptReg") as Repeater;
Repeater _rpt1 = gv.Rows[e.RowIndex].Cells[9].FindControl("rptVisitor") as Repeater;
foreach (RepeaterItem item in _rpt.Items)
{
TextBox _txt = item.FindControl("txtId") as TextBox;
TextBox _txt1 = item.FindControl("txtName") as TextBox;
//update db
}
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May 7, 2015
I have gridview in my page that users can edit their data in gridview below is code:
<asp:GridView ID="GridView1" runat="server" CssClass="DGridView1"
AutoGenerateColumns = "false" Font-Names = "Tahoma"
Font-Size = "9pt"
HeaderStyle-BackColor = "#e0e0e0"
OnPageIndexChanging = "OnPaging" onrowediting="EditCustomer"
onrowupdating="UpdateCustomer" onrowcancelingedit="CancelEdit"
GridLines = "Both" OnRowDataBound = "OnRowDataBound" >
I define Lable in gridview that I want when users click on edit it show s some text in this lable so I wrote editcustomer metod like below:
protected void EditCustomer(object sender, GridViewEditEventArgs e) {
Label3.Text = "neda";
GridView1.EditIndex = e.NewEditIndex;
BindData();
BindData1();
}
But this error happen:
the name "lable3" doesn't exist in current context
I know because I define it in gridview it can't recognize but how I can solve it?
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Mar 15, 2011
I'm back with my CascadingDropdown problems.
This one must be the last but not the less annoying.
I have a set of dropdowns ruled by 3 CascadingDropDowns extenders.
I would like to change the value of these dropdowns by javascript.
This works for the parent dropdown but not for the others.
Here is the javascript code used :
$find(element_name).set_SelectedValue(valeur,valeur);
$find(element_name)._onParentChange(null,true); // still wonder what are the parameters for...
This code does not give me any error but nothing change on display.
The strangest thing is that when I check the value of my dropdown with firebug, I get this :
<input id="Pane2_content_CONNEX_ClientState" type="hidden" name="Pane2_content$CONNEX_ClientState" value="D:::D:::">
And the value that I set is "D". But on the webpage, the dropdown displays a "A" which is the last selected value.
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Jan 18, 2010
I do try to use the modalpopup extender, it works with the client button click but not with the server side method.
I even used the document.readyState == "complete" javascript method to be shure the whole page is loaded.
But I'm still unable to get that modalpopup extender control.
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Feb 10, 2010
Im not able to find control in datalist.
Protected
Sub DataList1_ItemDataBound(ByVal sender
As Object,
ByVal e As System.Web.UI.WebControls.DataListItemEventArgs)
Handles DataList1.ItemDataBound
lblshippingoutside.Visible =
Dim lblshippingoutside
As Label = CType(e.Item.FindControl("lblshippingoutside"), Label)False
End Sub
Throws an exception .
Object reference not set to an instance of an object.
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Dec 5, 2012
i have datalist and on button click event i check the checkbox is checked or notfor this my code is
<asp:DataList runat="server" ID="dlstproductsize">
<ItemTemplate>
<input type="checkbox" value="<%#eval("size_id")%>" id="chksize" runat="server" /> <%#Eval("name")%>
</ItemTemplate>
</asp:DataList>
If chkallowsize.Checked = True Then
For Each item In dlstproductsize.Items
If (CType(item.FindControl("chksize"), HtmlInputCheckBox)).Checked = True Then
ocommon.ProductMapingInsert(uniq_id.Text, CType(item.FindControl("chksize"), HtmlInputCheckBox).Value)
End If
Next
End If
i get the error like object reference not set to the object
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Jun 12, 2010
I Have the gridview control with 2 dropdown list and 2 text boxes,When the textbox chnaged event happen 1 row will create and the dropdown back to initial values( its not retaining the selected values),I am binding the control after text changed method,Is there any properties needs to be set or any other way we can retain the values in postbacks?
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Mar 29, 2010
Unable to find control inside the usercontrol in vb.net
code of master page
[Code]....
code of master page 2
[Code]....
In the web user control i have insert some link buttons like home, contact etc...
in the default page i want to change the linkbutton css class inside the user control....
i am always get nothing value....
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Mar 29, 2010
I am using following code in sharepoint custom page. Whenever I try to run the page it is giving me following error
Unable to find control id 'txtStart$txtStartDate' referenced by the 'ControlToCompare' property of 'valDate'.
[Code]....
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May 7, 2015
I have downloaded the ajax toolkit control i been using it for a couple of months now. But I cannot see Ajax toolkit pie chart control..
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Jun 13, 2010
When I click a server side control, such as linkbutton, I have to do something on Page_Init or Page_Load. How do I find the right LinkButton if I have many LinkButtons in this page. You know that Page_Init or Page_Load is execute before LinkButton_Click.
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Nov 3, 2010
I am able to find the controls of all of these Lables and TextBoxes accept the edateTB. This is strange to me because it is in the same view as the sdateTB. So why would edateTB return NULL when I try to use FindControl on it and sdateTB return the correct control?
Here is the codebehind where I am getting this error. There is more code in this, but I just thought I would include everything up to the part where I get the NULL error.
[Code]....
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Jul 30, 2010
Couple of days ago I was creating site where i have placed a login control taken from the Login Tab in Toolbar, but today i am unable to find it there, see the attached snap, where the Login Control Is ?
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May 19, 2010
May be this question sounds silly, but I want to add an event for the Dropdownlist web control (using VB.Net) to implement Click event. I have a Dropdownlist control with some items. As soon as user selected an item, it should display some records based on the selection. Currently I am having a Submit button and user has to hit on that button to see the records. I want to remove the Submit button and wants to see the records as soon as the user choose the item in the dropdownlist
Dropdownlist is coming with default event "SelectedIndexChanged" and it is not helping me to achive what I want
This is my code that I tried so far (but zero luck)
[Code]....
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Sep 23, 2010
I'm trying to define the parameters of my data source using a stored procedure. My Stored Procedure Syntax is perfect and i'm happy with that, i've just got trouble with connecting my parameters to my controls. I have 19 Parameters, of which i've managed to connect 17 to controls within my ASP.Net form (some to text boxes, some to ddls etc...)
However, i'm trying to connect a particular parameter to a control, but when i drop down my list of controls it's not visible? The control is within a hidden panel so i've un-hidden it and it's still not there. I've even commented out the panel and tried that but i can't find this control! I just cant seem to get this control to appear in the list.
Has any one seen anything like this before at all?
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Aug 23, 2010
This has got me stumped. I am trying to find a checkbox in a dynamically loaded asp.net Repeater template. The template works fine and the databinding is fine and everything displays fine but I can't find the control!
This is the repeater code (I have a similar one for the alternate template with a different style):
[Code].....
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Oct 6, 2010
In the last cell of my gridview I have 2 separate linkbuttons. I want to further process them using Gridview Onrowcommand event but How would I know which particular link has actually raised the event.
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Feb 26, 2010
I have a GridView control that contians, among other things, a DropDownList. In this particular case, the DropDownList is in the EmptyDataTemplate, but I suspect I will run into a similar situation when I'm in Data Rows as well.I'm trying to handle the OnSelectedIndexChanged event for the DropDownList and in the .aspx file I have used the declarative syntax to assign the handler OnSelectedIndexChanged="ddlStoreList_SelectedIndexChanged") and have created the handler code to deal with this.
[Code]....
The problem that I'm running into is that the event is not being handled. In other words, when I put a breakpoint in the handler, I find that it is not getting hit when I change the selection of the DropDownList.
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Jul 15, 2010
I add one or more textbox controls to a repeater itemtemplate during OnItemDataBound.
The textbox controls are instantiated and then added to a placeholder.
My problem is getting the user entered values from those dynamically added textboxes. They do not seem to exist in the repeater items collection.
[Code]....
[Code]....
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Mar 25, 2010
I need to feach the selected value of a dropdown list which is in gridview at gridview_RowUpdating event.this is the way I have done that, but it is not working can sombody guide me to do this.DropDownList itemCode = gvTest.Rows[e.RowIndex].Cells[0].FindControl("itemCode") as DropDownList;
if (itemCode != null)
{
Session["itemCode"] = itemCode.SelectedValue.Trim();
}
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