Forms Data Controls :: Findcontrol In A Gridview / Give The Controls Unique IDs
Sep 14, 2010
I've got a gridview with a few textboxes in each row which I want to insert into a database, after a user clicks a submit button (thats outside of the gridview)
This is my code for the gridview
[Code]....
And this is my code for the button
[Code]....
But when I click the button it gives me this error
"Multiple controls with the same ID 'Label12' were found. FindControl requires that controls have unique IDs."
How do I give the controls unique IDs if they are in a gridview and the rows are database driven?
I got this error when i press a button, but i searched for that ID 'DXSelBtn0' i couldn't find it. Button is a Devexpress button, and i just add click event to it thats all. When i delete the event, i don't get that error. What should i do?
I have a user control, which is added dynamically, but I have noticed that when it is on the page and viewing the source that none of the controls within have been given unique ids. How do I give my user control and the controls within unique ids in order that I can use them in my events?
I'm doing this in my Master Page. I want to access a Linkbutton within the Gridview and set the enabled = false; I tested this and it works all the way up to the first if statement.If I insert a response.write to get the frmctrl.ID, I get all of the controls on the page. BUT, can't get the controls within the gridview.How do I get the contorls within the gridview? I prefer not to do this using Findcontorls and esp setting the control to Public.
I have a dynamic gridview in which i need to add textbox, checkbox, imgButton in the cell dynamically.
At the moment user click on the imbgutton, a click event fire and i need to capture the user input on the checkbox and textbox of the particular cell.
I have problem in finding out the checkbox and textbox control in the imgbutton click event. The cause is i do not know which row in the gridview i need to search to for the control.
What I've done is I've setup a Gridview with a datasource to show only 1 of the columns I need from the datasource, but I also have another ItemTemplate Column in which I have a dropdownlist with another datasource that I've bound to the dropdownlist.
What I need to do is have the dropdownlist show the selected one when compared to a id from datasource in the gridview.
I have a gridview with several ItemTemplates. The first contains a checkbox the rest contain textboxes. I then added dynamically some bound controls like this:
BoundField bdfPrivName = new BoundField(); clsUtilities.SetBoundFieldCenter(ref bdfPrivName, "PrivName", "Priv Name"); BoundField bdfDescription = new BoundField(); clsUtilities.SetBoundFieldLeft(ref bdfDescription, "PrivDesc", "Description"); BoundField bdfLive = new BoundField(); clsUtilities.SetBoundFieldCenter(ref bdfLive, "Live","Active?"); grdExisting.Columns.Add(bdfPrivName); grdExisting.Columns.Add(bdfDescription); grdExisting.Columns.Add(bdfLive);
I then use FindControl to locate the checkbox and textboxes and perform my logic based the result foreach (GridViewRow gvr in grdMissing.Rows) { mckbAny = (CheckBox)gvr.FindControl("ckbAdd"); mtxtApplyDate = (TextBox)gvr.FindControl("txtAddApplyDate"); mtxtDateToAdd = (TextBox)gvr.FindControl("txtAddDateToAdd"); mtxtDateToRemove = (TextBox)gvr.FindControl("txtAddDateToRemove"); etc.
This all worked fine. I then got a request to put the bound fields as the second, third and fourth columns, after the check box and before the textboxes. I found that this was easy to do by changing the Add's to Inserts as follows: grdExisting.Columns.Insert(1, bdfPrivName); grdExisting.Columns.Insert(2, bdfDescription); grdExisting.Columns.Insert(3, bdfLive); It looked fine of the page, but the FindControls, all of them fail to work.
I have a dropdownlist embedded into an asp.net gridview. I have successfully populated the dropdown list in the footer but have not been able to populate the dropdownlist in the EditItemTemplate. Here is my code that works. I need to do the exact same thing for a dropdownlist embedded in the update functionality of the gridview.
After I add a new author I am displaying the author inside the gridview in an Accordian and I need to expand the accordian for this one record, in the btn_AddAuthor event I am trying this:
[Code]....
the problem that I am having is that nothing happens: , the accordian is not expanded but I need it to be expanded.
im developing website for my college.I have Recent updates in my home page in that i want to display newly added or updated things in recent updates.
sourcecode and Instructions for how to create link and how to redirect that to corresponding forms and how to create forms for particular updates dynamically then i want to make scroll the updates in GridView using Vb.net.
In my Application, I am using User control which contains one GridView and few Buttons. GridView Contains CheckBox in Item Template of first Column for Selection purpose. Now on one of the Button's click Event I am traversing through the GridView and find which row is selected.
Following is my Code for traversing which is not working:
In my GridView I use FindControl/<FooterTemplate> with a TextBox that you can enter an integer with a comma
into the TextBox, because I create an instance of the Textbox first and then remove the comma out of the integer before the TextBox is used to update the table in the database.
However once the data is in the table and displayed in the GridView if you try to change the integer and use a comma in the GridView you cannot because FindControl/<EditItemTemplate> will not create an instance for you to remove the comma from the integer before it updates the table because FindControl/<EditItemTemplate> doesn't allow you to create an instance of the TextBox first, instead when you try to use the instance that looks like was created it gives an error stating:
Object reference not set to an instance of an object.
So the question is:
HOw do you create an instance of a TextBox in a GridView when using FindControl/<EditItemTemplate>?
i have agridview in asp.netwich is connected to datatablei edit the culomn added the abelite to delet rowsbut when i press the delete choice i got an errorthe error wich i c istnx The GridView 'GridView1' fired event RowEditing which wasn't handled. escription:An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.Exception Details: System.Web.HttpException: The GridView 'GridView1' fired event RowEditing which wasn't handled.Source Error:
Object reference not set to an instance of an object.
Description:
An unhandled exception occurred during the execution of the current web request. review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.NullReferenceException: Object reference not set to an instance of an object.
Public Sub btnSave_Click(ByVal sender As Object, ByVal e As System.EventArgs)Line 246: 'Dim thv As GridView = TryCast(Me.FindControl("grd1"), GridView)Line 247: Dim lbltargetdir As Label = TryCast(TryCast(Me.FindControl("grd1"), GridView).FindControl("lblparentpath"), Label)Line 248:Line 249: Directory.CreateDirectory(lbltargetdir.Text.ToString() & nm.Text)
My GridView uses auto generate Edit & Delete command button. And then program the insert button. I want to do something when users click the Edit button so I wrote something like this:
[Code]....
When click the Insert button in the Footer, the program works fine. But when trying to click the auto generate Edit button, the following statement failed with the exception stated in the code above:
In my gridview, I have an ImageButton and when the user clicks it, I show a modal, however, when I popUp modal its showing me the same Datakey value for each row, so, is there a way to use FindControl for the selected row within the RowCommand?
