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asp.net dynamically button with event handler wont work

Hi I create button to fire event when user click on row.
It works when I create that "hidden" buttons on master page but when I create those buttons on MainContent it won't fire the event:
List<Button> btnCollection = new List<Button>();
protected void OnRowTask(object sender, GridViewRowEventArgs e)
{
if (e.Row.RowType == DataControlRowType.DataRow)
{
string CellValue = Convert.ToString(DataBinder.Eval(e.Row.DataItem, "id"));
string urlAddress = Convert.ToString(DataBinder.Eval(e.Row.DataItem, "url_address"));
Button dummyBtn= new Button();
dummyBtn.Attributes["style"] = "display:none;";
dummyBtn.ID = "divBtn_" + CellValue;
dummyBtn.Text = urlAddress;
dummyBtn.Click += new EventHandler(this.rowButton_Click);
PlaceHolderForHiddenBtn2.Controls.Add(dummyBtn);
btnCollection.Add(divButton);
e.Row.Attributes.Add("onclick", "return rowclick(" + CellValue + ");");
}
Session["hiddenBtnCollectionTask"] = btnCollection;
}
Click event:
private void rowButton_Click(object sender, EventArgs e)
{
//some code to exectute
}
On page load I create the same buttons what was added on row created event:
protected void Page_Load(object sender, EventArgs e)
{
if (Session["hiddenBtnCollectionTask"] != null)
{
List<Button> btnGenerateList = (List<Button>)Session["hiddenBtnCollectionTask"];
foreach (Button btn in btnGenerateList)
{
PlaceHolderForHiddenBtn2.Controls.Add(btn);
}
}
}
And JS function that should fire button.click() - event :
function rowclick(id) {
var button = document.getElementById('MainContent_divBtn_' + id);
button.click();
return false;
}
Any ideas?

Html button call a function in code behind and it fires only once

I have html button which calls a function in code behind and it fires only once.
I want it to fire event every time I click the button.
It is possibly duplicated but I have tried to add "!IsPostBack" but it doesn't work.
My ascx class:
<button runat="server" type="button" class="btn btn-report" onserverclick="OnReportBtnClick" id="reportBtn">
<i class="glyphicon glyphicon-floppy-disk"></i>
</button>
I have to use html button, not <asp:Button> because <asp:Button> doesn't let me to insert <i> tag inside.
Here is my code behind:
protected void Page_Load(object sender, EventArgs e)
{
if (IsPostBack == false)
{
try
{
reportBtn.ServerClick += OnReportBtnClick;
}
catch (Exception ex)
{
}
}
}
//this method is called only once even I click the button many times afterwards.
protected void OnReportBtnClick(object sender, EventArgs e)
{
try
{
// Set file name
string pdfName = SPContext.Current.Web.Title + fileType;
CultureInfo provider = CultureInfo.InvariantCulture;
DateTime startDate = DateTime.MinValue;
if (!string.IsNullOrEmpty(report_startDate_datePicker.Value))
startDate = DateTime.ParseExact(report_startDate_datePicker.Value, format, provider);
DateTime endDate = DateTime.MaxValue;
if (!string.IsNullOrEmpty(report_endDate_datePicker.Value))
endDate = DateTime.ParseExact(report_endDate_datePicker.Value, format, provider);
// Provisioning data for report
var report = GetReport(startDate, endDate);
// Merger data to template html
byte[] data = GetPdfData(htmlTemplate, report);
//Respond report to client
RenderResponse(pdfName, data);
}
catch (Exception ex)
{
LoggingService.LogError(LoggingService.NTT_ERROR,
string.Format("ERROR: {0} - SOURCE: {1} | {2}", ex.Message, ex.Source, System.Reflection.MethodBase.GetCurrentMethod().Name));
}
}
//I think the problem could be this method.
//I return a pdf file to client
private void RenderResponse(string pdfName, byte[] data)
{
try
{
HttpContext.Current.Response.Clear();
HttpContext.Current.Response.ContentType = "application/pdf";
HttpContext.Current.Response.AddHeader("content-disposition", "attachment;filename=" + pdfName);
HttpContext.Current.Response.Cache.SetCacheability(HttpCacheability.NoCache);
HttpContext.Current.Response.BinaryWrite(data);
HttpContext.Current.Response.End();
HttpContext.Current.ApplicationInstance.CompleteRequest();
}
catch (Exception ex)
{
LoggingService.LogError(LoggingService.NTT_ERROR,
string.Format("ERROR: {0} - SOURCE: {1} | {2}", ex.Message, ex.Source, System.Reflection.MethodBase.GetCurrentMethod().Name));
}

You can use a LinkButton
<asp:LinkButton runat="server" ID="ReportBtn" Text="<i class='glyphicon glyphicon-floppy-disk'></i>" OnClick="ReportBtn_Click" CssClass="btn btn-report" />
in .cs page
protected void ReportBtn_Click(object sender, EventArgs e)
{
//your code
}
They do support html in the text field.

When I use window.location.href ,then my another function not calling .Following is my javascript code

I am using Following code..
When I click on the link, the javascript Hello() function is invoked
I want to use window.location.href
But when I use this the following __doPostBack('Button2_Click'), it does not work.
But when remove window.location.href from the following code then __doPostBack('Button2_Click') does work.
<script type="text/javascript">
function Hello(clicked_id) {
var abc = "http://localhost:2621/OrgChart.aspx?id" + clicked_id;
window.location.href = abc;
__doPostBack('Button2_Click');
return false;
}
</script>
<a id="A1" href="javascript:Hello();">LINK</a>
This is my code behind code...
public partial class WebForm17 : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
ClientScript.GetPostBackEventReference(this, string.Empty);//This is important to make the "__doPostBack()" method, works properly
if (Request.Form["__EVENTTARGET"] == "Button2_Click")
{
//call the method
Button2_Click(this, new EventArgs());
}
}
protected void Button2_Click(object sender, EventArgs e)
{
Label1.Text = "Method called!!!";
EmpInfo emp = new EmpInfo();
DA_EmpInfo da_emp = new DA_EmpInfo();
List<EmpInfo> lei = da_emp.GetAllEmployeeInfoByEmpId("MJ-IB-1");
DetailsView1.DataSource = lei;
DetailsView1.DataBind();
}
}

I guess, __doPostBack is making a request to the server and you break it by using window.location.href = abc;.
You should use some callback from this request to redirect to your url.

try to use setTimeOut function
setTimeout(function () {
window.location.href = abc;
}, 1000);
this will wait 1 second for finish of __doPostBack() function.
Or if you don't want to use timeOut, paste window.location.href = abc; line to end of the __doPostBack() function.

call javascript method from codebehind

how to call this javascript function from asp.net codebehind pageload..
<script type="text/javascript">
function abc() {
alert("Hello! I am an alert box!");
}
</script>
Is it possible to pass an integer array in to javascript function from asp.net codebehind pageload?

Try below code :
protected void Page_Load(object sender, EventArgs e)
{
System.Web.UI.ScriptManager.RegisterStartupScript(this, this.GetType(), "abc", "abc();", true);
}
1. Update > Passing string parameter :
protected void Page_Load(object sender, EventArgs e)
{
var message = "hi";
System.Web.UI.ScriptManager.RegisterStartupScript(this, this.GetType(), "abc", "abc('" + message + "');", true);
}
JavaScript Method with string parameter :
function abc(message) {
alert(message + ", I am an alert box!");
}
2. Update > Passing string parameter and numeric array to JS method:
protected void Page_Load(object sender, EventArgs e)
{
int[] numbers = { 10, 20, 30 };
string serializedNumbers = (new JavaScriptSerializer()).Serialize(numbers);
var message = "hi";
System.Web.UI.ScriptManager.RegisterStartupScript(this, this.GetType(), "abc", "abc('" + message + "', " + serializedNumbers + ");", true);
}
JavaScript Method with string and numeric array parameters:
function abc(message, numbers) {
alert(message + ", I am an alert box!");
for (var i = 0; i < numbers.length; i++) {
alert(numbers[i]);
}
}

Regular Page
protected void Page_Load(object sender, EventArgs e)
{
ClientScript.RegisterStartupScript(GetType(), "abc" + UniqueID, "abc();", true);
}
Ajax Page
You need to use ScriptManager if you use ajax.
protected void Page_Load(object sender, EventArgs e)
{
ScriptManager.RegisterStartupScript(this, GetType(),
"abc" + UniqueID, "abc();", true);
}

Try
Dim script As String = String.Format("abc()", "")
ScriptManager.RegisterClientScriptBlock(Me, GetType(Page), UniqueID, script, True)
Or simply
ClientScript.RegisterStartupScript(GetType(), "abc", "alert('Hello! I am an alert box!')", true);

You can't call a JavaScript function from the codebehind, but you can return a response that includes JavaScript that invokes the function when the page loads in the browser. Just make sure that your page includes
<script type="text/javascript">
function abc() {
alert("Hello! I am an alert box!");
}
abc();
</script>
That could be either as part of the ASPX page or you could register it as a script block in the codebehind.

how can I to get controls back on my first page after server.execute("../../abc.aspx"). I have to show an alert after server.execute()

This is my Code, After Server.Execute() my popup does not show.
protected void Generate_cola_letter(object sender, EventArgs e)
{
try
{
Server.Execute("../ABC.aspx");
}
catch (Exception exp)
{
}
finally
{
ScriptManager.RegisterStartupScript();
}

Are you trying to create a Message box?
this is an example of a message box in asp.net
string script = "alert(\"Your Message.\");";
ScriptManager.RegisterStartupScript(this, GetType(),
"ServerControlScript", script, true);