Web Forms :: Add EventHandler Programmaticaly
Apr 27, 2010I create dynamic radiobuttons and want to add an eventhandler to them. What I have now doesn't work.
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I create dynamic radiobuttons and want to add an eventhandler to them. What I have now doesn't work.
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I'm making an application that fetches videos from youtube.i'm done with searching partow i wanna fill data into a panel using label and image button but neither format is good nor image button performing its click event.
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I have a gridview in which I add extra rows manually (besides the regular bound rows).The manually added rows do not have a textbox, they are just text.The normal rows hold a textbox "minprice".Now when the user clicks the NewGarage button I want to loop through the gridview and get the values in each row for the minprice textbox.
Gridview structure looks like this:
MANUALLY_ADDED_ROW
NORMALROW <= enter value here works
MANUALLY_ADDED_ROW
NORMALROW[code]...
I have a gridview that is bind to the datatable. how to programmaticaly change the color of the 1-st column, after the binding has been done?
View 2 RepliesI have some code which fires when user selects an item in dropdownlist. Now i want the same code to fire when i set selectedindex programmatically.
I have tried setting
ddlSystemLevelDCP.SelectedIndex=2;
and this as well
ddlSystemLevelDCP.SelectedValue="2";
None of them fires this event.However when user changes the selection,this event fires.Please tell me what am i missing.
I have a PAGE with a structure like this:PAGE = MASTER PAGE A + nested MASTER PAGE B of A
View 2 RepliesI have a eventhandler in code behind of a UserControl.
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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.
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.
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?
A new route to an old problem for me... I'm creating radiobuttonlists and adding them to an update panel dynamically using this code:
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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.
write the custom eventhandler for a radiobuttonlist's SelectedIndexChanged, which was creating dynamically during runtime.
View 1 RepliesI 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.
View 33 RepliesI want to fie event calender_dayrender forcefully in dropdownlist_selectedindex .Dont know how to give parameters (sender,e).
View 3 Repliestrouble 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)
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I was trying to get the callback eventhandler work for me with Dropdown and either of the radio(s). I know the sample of this in asp.net 2.0 where both the contorls are dropdownlists. Please help me to know is it possible?
View 2 RepliesI am banging my head with gridview at the moment. There's a problem I just can't get my head around. I'd be very greatful for any advice given. I have a function that creates a DataTable with three columns and four rows. In each of the cells I set the text to a random number through RowDataBound event. I would like to just make the cell clickable and have a code-behind function that gets the position of the cell (column, row) and the value of the cell when the user clicks it.
View 3 RepliesI 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" };
<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)
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i have create two linkbuttons dynamically:
for (int i = 0; i < 2; i++)
{
LinkButton lb = new LinkButton();
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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)
{
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I have a gridview I create dynamically and one of the columns is a checkbox. I need to set an event handler on this control for checkedchanged. everything appears to work fine except for one thing....even though I can see my WebForm controls they are all null..(even thogh I know they are not) So I basically cant do anythign to the controls in the event handler. Here is teh code I use to create teh dynamic column in the gridview.
EtscUtilsUI.ALMSSECSRV.EALMSAppRoles ealmsapprole =
new EtscUtils.EtscUtilsUI.ALMSSECSRV.EALMSAppRoles();//Thsi
is the webform code behind partial class.
CheckBox chk =
new
CheckBox();
chk.ID = _columnName;
chk.DataBinding += new
EventHandler(chk_DataBinding);
//Attaches the data binding event.
chk.AutoPostBack = true;
chk.CheckedChanged += new
EventHandler(ealmsapprole.Dyn_CheckChanged);
container.Controls.Add(chk);
chk.Enabled = true;
This is the code for the event Handler
internal
void Dyn_CheckChanged(object sender,
EventArgs e)
{
string err =
"";
try
{
if (lblAppID.Text !=
"")
}
that label come back as null event though a previous event set its value successfully if I try to reference the gridview itself I get the error Object reference not set to an instance of an object.
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:
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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.
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"
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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");
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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"
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