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GridView Button reference on rowdatabound

I feel like I'm missing something obvious here but I'm just not getting it. I have a gridview with a template field column where i have a button and a hidden field. I'm trying to get the reference to both the button and the hidden field on row databound, as both the button's label and commandargument etc change depending on the other row data.
If i place a breakpoint in the area indicated in the code below, I can see that the hidden field is being assigned to properly, but the button is not. What am I missing here?
GridView.aspx
<asp:GridView ID="gvCurrentQueueStatus" runat="server" AutoGenerateColumns="False"
OnRowDataBound="gvCurrentQueueStatus_RowDataBound">
<Columns>
<asp:TemplateField ItemStyle-HorizontalAlign="Center" HeaderText="Service Controls">
<ItemTemplate>
<asp:Button ID="btnSubmitCommand" runat="server" Text="Control" OnClick="btnSubmitCommand_Click" />
<asp:HiddenField ID="hdnQueueNumber" runat="server" Value='<%# Eval("ReportQueueNumber") %>' />
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
GridView.aspx.cs
protected void gvCurrentQueueStatus_RowDataBound(object sender, GridViewRowEventArgs e)
{
if (e.Row.RowType == DataControlRowType.DataRow)
{
Button controlButton = (Button)e.Row.FindControl("btnSubmitCommand"); // FindControl fails
HiddenField hdnQueueNumber = (HiddenField)e.Row.FindControl("hdnQueueNumber"); // FindControl succeeds
// Other stuff
} // breakpoint here, successfully finds htnQueueNumber, but not btnSubmitCommand
}

Try this:
Button controlButton = e.Row.FindControl("btnSubmitCommand") as Button ;
Or try this way:
foreach (GridViewRow row in gvCurrentQueueStatus.Rows) {
Button controlButton = (Button)gvCurrentQueueStatus.Rows[row.RowIndex].FindControl("btnSubmitCommand");
}

So apparently my button was in fact getting properly assigned to, it was just not reporting as such when mousing over the variable in my debugger.
I'm not actually crazy, Visual Studio's debugger is however and needed the old "have you tried turning it off and on again".
Sorry about that those that helped look into my issue :3

Databind fires after ItemUpdated event

I'm using an asp.net 4 web site project (C#) in VS2008 and I have a FormView with ItemUpdated event:
<asp:FormView ID="FormView1" runat="server" DataSourceID="ds1" OnItemUpdated="FormView1_ItemUpdated">
<EditItemTemplate>
<asp:TextBox ID="TextBox1" runat="server" Text='<%# Bind("col1") %>' />
</EditItemTemplate>
</asp:FormView>
protected void FormView1_ItemUpdated(object sender, EventArgs e)
{
FormView1.DataBind(); // adding this line even doesn't help
TextBox box = FormView1.FindControl("TextBox1") as TextBox;
box.Enabled = false;
}
But I can't figure out, why an extra "FormView1.DataBind()" or Render(?) happens AFTER the ItemUpdated event. The result is that my code in the ItemUpdated event gets like "overwritten" and the TextBox1 doesn't get disabled.
When I set a breakpoint to the last line "box.Enabled = false;" then I see that after the ItemUpdated event it jumps to the aspx page again and steps through the TextBoxes.
Disabling this TextBox1 from another GridView1_SelectedIndexChanged works fine.
Is there any way to see the "current lifecycle progress" in debugging?
EDIT:
To clarify the reasoning...
I have a GridView1 where selecting the item populates the abovementioned FormView1. The point is that I need to disable some of the TextBoxes in the FormView1 based on, for example, user access levels.
Selecting the item from GridView1 disables the TextBox1 just fine, but when I click the Update button on the FormView1 then all TextBoxes are enabled, even if I see in the debugger code running through the GridView1_SelectedIndexChanged() function. And after I re-select the gridview item, the correct TextBoxes are disabled again.
Using even this code:
<asp:FormView ID="FormView1" runat="server" DataSourceID="ds1" DefaultMode="Edit" OnItemUpdated="FormView1_ItemUpdated">
<EditItemTemplate>
<asp:TextBox ID="TextBox1" runat="server" Text='<%# Bind("col1") %>' />
<asp:TextBox ID="TextBox2" runat="server" Text='<%# Bind("col2") %>' />
<asp:Button ID="Btn1" runat="server" CommandName="Update" Text="Update" />
</EditItemTemplate>
</asp:FormView>
protected void GridView1_SelectedIndexChanged(object sender, EventArgs e)
{
if (UserAccess() == false) {
TextBox box2 = FormView1.FindControl("TextBox2") as TextBox;
box2.Enabled = false;
}
}
protected void FormView1_ItemUpdated(object sender, EventArgs e)
{
GridView1_SelectedIndexChanged(sender, e);
}
Maybe I should disable my Textboxes via another event?

This doesn't make sense, please explain more about why you are trying to disable the TextBox, have you just left the ItemTemplate off in your question? or is it actually missing? if it's missing why?
The TextBox is in the FormView's EditItemTemplate, so will only be visible when the FormView is in edit mode. After clicking update or cancel the TextBox will no longer be rendered, and the ItemTemplate is rendered instead. So there should be no need to set the TextBox to be disabled.
EDIT
Ok since you edited your question. You need to use the OnDataBound event of the FormView, which occurs at the end of binding, and disable your TextBoxes at that point.
aspx
<asp:FormView ID="FormView1" runat="server" DataSourceID="ds1"
OnDataBound="FormView1_DataBound">
<EditItemTemplate>
<asp:TextBox ID="TextBox1" runat="server" Text='<%# Bind("col1") %>' />
</EditItemTemplate>
</asp:FormView>
aspx.cs
protected void FormView1_DataBound(object sender, EventARgs e)
{
if (UserAccess() == false) {
TextBox box2 = FormView1.FindControl("TextBox2") as TextBox;
box2.Enabled = false;
}
}

Rather then using gridview selected Index change you can use DataBound event on formview, so your logic would fire everytime the formview is rebind.

Calling a function in code behind by using an imagebutton in a gridview [duplicate]

This question already has answers here:
Closed 10 years ago.
Possible Duplicate:
Calling a functon in code behind by using an imagebutton in a gridview
I have an ImageButton within a gridview in .aspx on clicking this imagebutton i have to call a function.
This is how i tried and the function was not being called.
Code inside.aspx page:
<GridView ......>
<asp:HyperLink ID="HyperLink2" runat="server" NavigateUrl='<%# DataBinder.Eval(Container.DataItem,"VehID","mngVeh.aspx?delid={0}") %>'>
<asp:ImageButton runat="server" ID="DeleteUrlImageButton" ImageUrl="~/images/delete.jpeg" width='24' height='24'
OnClick="DeleteUrlImageButton_Click"
OnClientClick="return confirm('Are you sure you want to delete?');" />
</asp:HyperLink>
</GridView>
code in .aspx.cs page:
public void DeleteUrlImageButton_Click(object sender, EventArgs e)
{
//code to perform the necessary action.
}

I think you're mixing controls up here.
I would use an ImageUrl on the asp:hyperlink itself, and also the OnClick property. You can handle the OnClientClick by using javascript inside the NavigateUrl property.
I don't see a reason for having a nested ImageButton - I doubt this even works.
Or, just remove the asp:hyperlink completely and do a redirect inside the OnClick event.

The problem here is twofold: First, the click event does not bubble up through the GridView, which is why the event is not firing. Second, that there will be an ImageButton for each row of the GridView, and you need to identify which row the event originated from (or more accurately, which underlying datasource record that row corresponds to).
A common way to approach this problem is to use the ImageButton.CommandName and ImageButton.CommandArgument properties, and handle the GridView.RowCommand event.
Markup:
<asp:GridView ID="GridView1" runat="server" OnRowCommand="GridView1_RowCommand">
<Columns>
<asp:TemplateField>
<ItemTemplate>
<asp:ImageButton runat="server" ID="DeleteUrlImageButton" ImageUrl="~/images/delete.jpeg"
Width='24' Height='24' OnClientClick="return confirm('Are you sure you want to delete?');"
CommandName="MyDelete" CommandArgument='<%# Eval("RecordId") %>' />
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
Code:
protected void GridView1_RowCommand(object sender, GridViewCommandEventArgs e)
{
if ((e.CommandName == "MyDelete") && (e.CommandArgument != null))
{
//Add delete code here using e.CommandArgument to identify the correct record.
// For instance:
MyDataObject obj = new MyDataObject();
obj.RecordId = int.Parse(e.CommandArgument.ToString());
MyDataObject.Delete(obj);
}
}
Edit: I see you provided the name of the ID field in your example, so you would probably want to replace "RecordId" in my example with "VehID".

ASP.Net DataList problem

I have declaratively created a LinqDataSource and DataList and bound them in markup. I have created an ItemTemplate and Edit Template.
I have bound the DataLists oneditcommand and oncancelcommand to methods in the code behind.
<asp:DataList ID="MyDataList" runat="server" DataSourceID="LinqDataSource1" RepeatDirection="Horizontal"
Font-Bold="False" Font-Italic="False" Font-Overline="False" Font-Strikeout="False"
Font-Underline="False" HorizontalAlign="Center" RepeatColumns="4"
oneditcommand="MyDataList_EditCommand"
oncancelcommand="MyDataList_CancelCommand"
>
<ItemTemplate>
<div style="margin: 5px;">
<asp:LinkButton Text="Edit" CommandName="Edit" style="float:right" runat="server" />
// Other markup
</div>
</ItemTemplate>
When I click the LinkButton in the ItemTemplate, it runs the following code:
protected void DataList_EditCommand(object source, DataListCommandEventArgs e)
{
MyDataList.EditItemIndex = e.Item.ItemIndex;
MyDataList.DataBind();
}
This works fine and puts the selected item in the DataList into edit mode.
The Edit Template:
<EditItemTemplate>
<div style="margin: 5px;">
<asp:LinkButton Text="Cancel" style="float:right"
runat="server" CommandName="cancel" CausesValidation="false"/>
//other markup
</div>
</EditItemTemplate>
When I click the cancel button in the edit template, It does not fire the method in the code behind (the breakpoint doesn't get hit).
The Code that should be run when cancelling never get's run, so I can not exit the edit mode back into normal read mode:
protected void MyDataList_CancelCommand(object source, DataListCommandEventArgs e)
{
PhotoDataList.EditItemIndex = -1;
PhotoDataList.DataBind();
}
Can anyone think of a reason for this?
---- UPDATE
It seems that it is just the second firing of an event on the DataList that doesn't work, as I have know bound to the ItemCommand event, and was going to intercept the DataListCommandEventArgs.CommandName property and do something based on that. If you click the Edit link button, the ItemCommand method fires (with no code body at all), but the second time you click the edit link button, the ItemCommand method does not get hit.

The name of your DataList is : "MyDataList"
but Cancel event calls PhotoDataList!
protected void MyDataList_CancelCommand(object source, DataListCommandEventArgs e)
{
PhotoDataList.EditItemIndex = -1;
PhotoDataList.DataBind();
}

I can't duplicate your problem, I ran this demo code and all events and templates worked fine:
How to: Allow Users to Edit Items in DataList Web Server Controls
Do you have any errors in your event logs? Also, I don't see the DataKeyField defined, how are you selecting your data?

How to go to Edit Mode in FormView?

I have FormView:
<asp:FormView ID="fvReport" runat="server" DefaultMode="ReadOnly" AllowPaging="false" OnModeChanging="fvReport_ModeChanging" DataKeyNames="id">
protected void fvReport_ModeChanging(Object sender, FormViewModeEventArgs e)
{
switch (e.NewMode)
{
case FormViewMode.Edit:
fvReport.AllowPaging = false;
break;
}
}
in ItemTamplate I put LinkButton:
<asp:LinkButton ID="lbEdit" runat="server" CausesValidation="true" CommandName="Edit" CommandArgument='<%# Eval("id") %>'>Редактировать</asp:LinkButton>
Of course, FormView has EditItemTemplate section.
When I click Button, FormView is refreshed and stays in ReadOnly. What am I doing wrong?

you have to call ChangeMode method of FormView and pass the mode
fvReport.ChangeMode(DetailsViewMode.Edit);

Another option which I commonly use to go into edit mode from a formView is to add and define the EditItemTemplate element. This makes it a lot easier to make your application editable.
Within your formView you may need to change your DefaultMode to Edit. Also in your code behind try:
protected void fvReport_ModeChanging(Object sender, FormViewModeEventArgs e)
{
}
protected void lbEdit_Click(object sender, EventArgs e)
{
LinkButton lbEdit = (LinkButton)fvReport.FindControl("lbEdit");
if (sender == lbEdit)
{
fvReport.DataBind();
fvReport.ChangeMode(FormViewMode.Edit);
}
}

There could be other reasons why your FormView isn't switching over. It's usually down to badly formatted HTML. Your designer sometimes tells you of malformed sections by displaying something like this...
On those occasions when you don't get this obvious message, FormView not switching over is usually down to something a little less obvious, such as bad AssociatedControlId attributes. I would recommend looking at you labels, validators and anything where a control has to be associated to another. Something as small as this...
<asp:Label runat="server"
ID="labelAccessGrantedBy"
Text="Access Granted By"
AssociatedControlID="textAccessGranted" />
<asp:TextBox runat="server"
ID="textAccessGrantedBy"
CssClass="wmioSmall wFull"
Text='<%# Bind("access_granted_by") %>' />
Notice the deliberate use of textAccessGranted above, rather than the actual textAccessGrantedBy TextBox? That's where the command handling has failed for me in the past.