C# - How To Add EventHandler OnCommand For ImageButton Programaticly
Sep 30, 2010
I have code, where i add ImageButton to table programaticly and I need to assign event handler to this ImageButton. When I write ASP/HTML code, there is attribute OnCommand, but in C#, there is nothing like this. Just CommandName and CommandAttribute.
ImageButton ib = new ImageButton { CommandName = "Edit", CommandArgument = id.ToString(), ImageUrl = "~/Images/icons/paper_pencil_48.png", AlternateText = "Edit document" };
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Similar Messages:
Mar 4, 2010
I have a gridview which is bound to a dataset. I have placed several template fields in the grid with the following type of setup
HTML Code:
<asp:TemplateField>
<HeaderTemplate>
<asp:Label ID="Label1" runat="server" Text="File"></asp:Label>
<asp:ImageButton AlternateText="ASC" ID="imgASC" Width="10" Height="10"
ImageUrl="~/Modules/Interface/ASC.gif"
CommandArgument="eFolder ASC" runat="server" OnCommand="ImageButton_Command" />
<asp:ImageButton AlternateText="DESC" ID="imgDESC" Width="10" Height="10"
ImageUrl="~/Modules/Interface/DESC.gif"
CommandArgument="eFile DESC" runat="server" OnCommand="ImageButton_Command" />
</HeaderTemplate>
<ItemTemplate>
<asp:Label ID="Label1" runat="server" Text='<%# Eval("eFileName") %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
on the code page I have mapped the OnCommand event to the following code
Code:
Protected Sub ImageButton_Command(ByVal sender As Object, _
ByVal e As System.Web.UI.WebControls.CommandEventArgs)
Try
Dim img As ImageButton = CType(sender, ImageButton)
img.BorderStyle = BorderStyle.Ridge
SortOrder = e.CommandArgument
BindData()
Catch exc As Exception
ProcessModuleLoadException(Me, exc)
End Try
End Sub
My problem is that by clicking on the image button in the gridview header, the OnCommand event is not being fired. I have tried this with both OnClick and OnCommand and neither fires. I can't see what I am doing wrong if anything.
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Mar 25, 2011
I have a TextBox and a Gridview.
[code]...
Without DataSource, how can i add in my .cs file programaticly just TextBox1.Text to Gridview's first column?
GridView1.Columns[1].ToString() = TextBoke.
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Mar 7, 2010
I would like to know how i add a column with a DropDownList Programaticly.This is how i create the Columns
[Code]....
In my TemplateField tmpfield i want a DropDownList. How would i do that?
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Feb 12, 2011
I have in the master page an overridden method for OnCommand method.Can I call it programmatically through any page uses the master page?I mean something like the following:
CallOnCommand("CommandName", "CommandArg");
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Jun 22, 2010
<asp:LinkButton
ID="lbtnNum"
runat="server"
OnClientClick="javascript:ctl00$MainPlaceHolder$MainControl$btnProgressIndicator.click();"
Text="Number"
CommandName="Sort"
OnCommand="Column_Click" CommandArgument="Num"
/>
<asp:Button
ID="btnProgressIndicator"
runat="server"
Text=""
CssClass="btnProgressIndicator"
/>
<ajax:ModalPopupExtender
ID="mpeProgressIndicator"
runat="server"
BackgroundCssClass="modalBackground" TargetControlID="btnProgressIndicator"
PopupControlID="pnlProgressIndicator"> </ajax:ModalPopupExtender>
Some how is my above syntax btnProgressIndicator.click() is not called when the user clicks on the LinkButton.
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Apr 23, 2010
I've got a button inside the gridview that isn't firing the onCommand, ONLY when I uncomment some seemingly unrelated code having to do with session in the page load.
Markup:
[Code]....
Code Behind:
[Code]....
Now here is the odd thing. If I comment out the If Not Session block in the page_load....it works and deleteUser will fire upon a button click. If I leave it uncommented as now.....it won't work.
The weird part is when I step through the code in debug, upon clicking the remove button, it still registers that as being clicked and runs page_load, etc again. But won't run deleteUser.
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Jan 3, 2010
I have a wizard control and I have defined a custom header template for it and I have put a label control inside that header template and I need to access it programaticly at runtime.
How do I get reference to it in the 'ActiveStepChanged' event of the wiard?
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Apr 27, 2010
I create dynamic radiobuttons and want to add an eventhandler to them. What I have now doesn't work.
[Code]....
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Oct 13, 2010
what're the differences between onclick event and oncommand event?
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Feb 24, 2011
I have a eventhandler in code behind of a UserControl.
[Code]....
This one gets called from Page_Init
When i embed it directly into an aspx page it works as intended. But when i add the control to antoher control which is embed into an aspx page. The event suddenly doesn't fire.
aspx->usercontrol->usercontrol.
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Apr 15, 2010
<asp:TextBox runat="server" ID="Accountname" />
<asp:CustomValidator runat="server" ControlToValidate="Accountname" OnServerValidate="Accountname_CheckUnique" meta:resourcekey="ACCOUNTNAME_UNAVAILABLE" />
protected void Accountname_CheckUnique(object source, ServerValidateEventArgs arguments)
[code]...
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Jun 14, 2010
I'm adding a Button to a TableCell dymanically in code-behind and cant get an event handler to work.
Here's some code...
...
TableCell tc = some TableCell....
Button b = new
Button();
b.Text = "Go";
b.Click += new
EventHandler(OnSequenceChanged);
...
protected void OnSequenceChanged(object Sender,
EventArgs Args)
{
}
I set a break at OnSequenceChanged, but it doesnt hit when I click the button. It posts back - Page-Load gets called - but its event handler doesnt get called.
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Apr 27, 2010
i have create two linkbuttons dynamically:
for (int i = 0; i < 2; i++)
{
LinkButton lb = new LinkButton();
[code]...
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Oct 14, 2010
On page load I have this:
LinkButton1.Attributes.Add("onclick", "window.open('EditClients.aspx','','height=700,width=600');return false")
I also have an event handler for LinkButton1:
Protected Sub LinkButton1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles LinkButton1.Click
Label8.Visible = True
RefreshButton.Visible = True
End Sub
The problem is the event handler is ignored. Label8 and RefreshButton do not becoem visible when clicking Linkbutton1, but the new window opens fine. How can I make all things happen?
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Nov 20, 2010
The scenerio is I have a UserControl. This user control will create dynamically ListBoxes if the given List's count > 0. The controls are adding dynamically, there is no problem with adding them, but the event handler is not adding. If I select an item in first listBox, the secondListBox will be added dynamically, and items will add dynamically too. First listBox appears, but the selectedIndexChanged event handler doesn't work. What can be the problem with my code?
EDIT: I tried to add
li.Attributes.Add("onselectedindexchanged","selectedIndexChanged");
or
li.AutoPostBack = true;
but still not firing...
private List<string> myList = new List<string>() { "Serkan", "Kadir" };
private List<string> mySecondList = new List<string>() { "Istanbul", "Ankara" };
protected void Page_Load(object sender, EventArgs e)
{
[Code]....
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Feb 24, 2010
A new route to an old problem for me... I'm creating radiobuttonlists and adding them to an update panel dynamically using this code:
[Code]....
I'm wanting to get the selected radio button value whenever a button on the page is pressed, however (and this is my old problem) I cannot retrieve that value. What I'm wanting to try is to add an event that will record the chosen radio button whenever the selected value has changed and store it into an array.
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Jul 5, 2010
I'm trying to program a site so object oriented as I am able to....To do this I found a Paging example on the net.....but written in VB - and I'm programming in C#.In the VB example there is a line:
[Code]....
I have googled this a while now - and what I can figure out is there is missing something.....But I cann't figure out what.
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Jan 15, 2010
I have a gridview in my page, called "GridView1", and Paging is enabled.I want to create a handler for PageSelectedIndexChanged but i keep getting this error: No overload for 'PageSelectedIndexChanged' matches delegate 'System.EventHandler'
asp:GridView
ID="GridView1"
runat="server"
OnPageIndexChanged="GridView1_PageSelectedIndexChanged"
[code]...
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Oct 19, 2010
It highlights this bit of code:
<asp:DataList ID="DataList1" runat="server" DataKeyField="uniqueid"
protected void Page_Load(object sender, EventArgs e)
protected void DataList1_Load(object sender, DataListItemEventArgs e)
Label Label1 = (Label)e.Item.FindControl("Label1");
Label Label2 = (Label)e.Item.FindControl("Label2");
Label Label3 = (Label)e.Item.FindControl("Label3");
[code]...
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Feb 28, 2011
write the custom eventhandler for a radiobuttonlist's SelectedIndexChanged, which was creating dynamically during runtime.
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Sep 3, 2010
I was woundering if there is a way to seach for a gridview on event handler.? I have three gridviews in which i can insert from and on my insertbutton codebehind, I want to check the gridview i am using so i could get the datakeynames for insert into the database.
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Mar 4, 2011
I want to fie event calender_dayrender forcefully in dropdownlist_selectedindex .Dont know how to give parameters (sender,e).
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Nov 15, 2010
I'm trying to look up the TypeID for each row of data returned from my sqldatasource that is displayed in a repeater. But I keep getting this error: CS0123: No overload for 'rptSectionExperience_OnDataBinding' matches delegate 'System.EventHandler'I know I've looked up values from a datagrid before and programatically used the data.
<asp:Repeater
ID="rptSectionExperience"
runat="server"
OnDataBinding="rptSectionExperience_OnDataBinding"
DataSourceID="dsGetResults"
[code]...
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Mar 1, 2010
trouble with the gridview.First at all, I needed a dropdownlist in my gridview, I got it, but now I would like to add a new column with a linkbutton or link that send me to another page to edit an especific item (users in this case), but when I add the column and use templates to put a linkbutton I cannot add event to every linkbutton :(I do this in:
Protected Sub GridView1_RowDataBound(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.GridViewRowEventArgs) Handles GridView1.RowDataBound
Dim row As GridViewRow = CType(e.Row.Cells(0).NamingContainer, GridViewRow)
[code]...
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