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Wednesday, March 28, 2012

calling javascript function after asychronous call back event

I have a grid showing a list of records and a 'AddNew' Button on page. When user clicks on 'AddNew' a 'Table' which is not visible by default becomes visible using javascript and setting 'style.visible='visible'' and 'style.display='block'' properties. Now when user enters the data for new listing and click on 'Save Data' button i am sending an aschrounous call back using AJAX tool kit and UpdatePanel. Everything workes fine and record is entered withour complete Page Postback. But after the record is inserted and Grid is refreshed with asychronous postback what i want is to Hide that 'Add New' table and just wanted to show Grid on page. And the problem is i am not able to call the javascript function after asychronous call back which hides the Table.

Any suggestions?

Look into the Sys.WebForms.PageLoadedEventArgs class.

http://ajax.asp.net/docs/ClientReference/Sys.WebForms/PageLoadedEventArgsClass/default.aspx

(its a lot easier than the docs make it look)

<script type="text/javascript">var postbackElement;Sys.WebForms.PageRequestManager.getInstance().add_beginRequest(beginRequest);Sys.WebForms.PageRequestManager.getInstance().add_pageLoaded(pageLoaded); function beginRequest(sender, args) { postbackElement = args.get_postBackElement(); } function pageLoaded(sender, args) { var updatedPanels = args.get_panelsUpdated(); if (typeof(postbackElement) === "undefined") { return; } else if (postbackElement.id.toLowerCase().indexOf(YOURPOSTBACKELEMENT) > -1) { //WHATEVER SCRIPT YOU NEED TO RUN } }</script>

Thankslilconnorpeterson ! your solution worked fine but fortunately i came to know that the problembecomes really simple and there is no need for calling javascript and making a Table Visible/Invisible if i replace the HTML table with server side Panel. Now i can simple make it Visible/Invisible by setting its Visible/Invsible property to true/false in codebehind.

Regards,

Zeeshan Malik

Monday, March 26, 2012

Call Server Side Function before showing Modal Popup

I m showing Modal Popup on click of Edit Link Button of Datagrid.

Now when Link button is clicked I want to show the values of that particular row in Modal Popup.

This has to be done at server side as it would be updation of row and it has dropdown which has to be filled at server side..

So plz help ..

Below i m attaching the code:

<%@dotnet.itags.org.PageLanguage="VB"AutoEventWireup="false"CodeFile="ModalPopUp_In_Datagrid.aspx.vb"Inherits="ModalPopUp_In_Datagrid" %>

<%@dotnet.itags.org.RegisterAssembly="AjaxControlToolkit"Namespace="AjaxControlToolkit"TagPrefix="cc1" %>

<!DOCTYPEhtmlPUBLIC"-//W3C//DTD XHTML 1.0 Transitional//EN""http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<htmlxmlns="http://www.w3.org/1999/xhtml">

<headrunat="server">

<title>Untitled Page</title>

<scripttype="text/javascript"language="javascript">

function shopModalPopup(employeeID){

//show the ModalPopupExtender

$get("<%=Label1.ClientID %>").value = employeeID;returnfalse;

}

</script>

<styletype="text/css">

.modalBackground

{

background-color:#000;

-moz-opacity:0.7;

opacity:.70;filter:alpha(opacity=70);

}

</style>

</head>

<body>

<formid="form1"runat="server">

<div>

<asp:ScriptManagerID="ScriptManager1"runat="server">

</asp:ScriptManager>

</div>

<asp:PanelID="Panel1"runat="server"Height="50px"Width="125px">

<asp:GridViewID="GV1"runat="server"AutoGenerateColumns="False"DataKeyNames="RID">

<asp:BoundFieldDataField="rid"HeaderText="rid"/>

<asp:BoundFieldDataField="name"HeaderText="Name"/>

<asp:TemplateField>

<cc1:ModalPopupExtender ID="ModalPopupExtender2" runat="server" PopupControlID="popupPanel"
OkControlID="btnOk" CancelControlID="btnCancel" BackgroundCssClass="modalBackground" TargetControlID="lnkPopup">
</cc1:ModalPopupExtender>

<asp:LinkButtonrunat="server"Text="Popup"CommandName="EditRow"CausesValidation="false"ID="lnkPopup"OnCommand="lnkPopup_Command"></asp:LinkButton>

</ItemTemplate>

</asp:TemplateField>

</Columns>

</asp:GridView>

</asp:Panel>

<asp:PanelID="popupPanel"runat="server"Height="50px"Width="125px">

Click To Display Authors Name:

<asp:LabelID="Label1"runat="server"></asp:Label>

<br/>

<asp:ButtonID="btnOk"runat="server"Text="OK"/>

<asp:ButtonID="btnCancel"runat="server"Text="Cancel"/>

</asp:Panel>

<br/>

</form>

</body>

</html>

Hi Varun,

Please don't attach a hidden Control(visible= false) to your ModalPopupExtender or it won't work because no Dom element generate to the client. Also don't put $get function before ScriptManager. Here is the sample , please pay attention to the "Bold" part.

<%@. Page Language="VB" %><%@. Register Assembly="AjaxControlToolkit" Namespace="AjaxControlToolkit" TagPrefix="cc1" %><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><script runat="server"> Sub fill_values() Label1.Text = "a" End Sub Protected Sub GV1_RowCommand(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.GridViewCommandEventArgs) If e.CommandName = "EditRow" Then fill_values() ModalPopupExtender2.Show() End If End Sub</script><html xmlns="http://www.w3.org/1999/xhtml"><head id="Head1" runat="server"> <title>Untitled Page</title> <style type="text/css"> .modalBackground { background-color:Gray; filter:alpha(opacity=70); opacity:0.7; } .modalPopup { background-color:#FFD9D5; border-width:3px; border-style:solid; border-color:Gray; padding:3px; width:250px; } </style></head><body> <form id="form1" runat="server"> <asp:ScriptManager ID="ScriptManager1" runat="server"> </asp:ScriptManager> <asp:Panel ID="Panel1" runat="server" Height="50px" Width="125px"> <asp:GridView ID="GV1" runat="server" AutoGenerateColumns="False" DataKeyNames="EmployeeID" DataSourceID="SqlDataSource1" AllowPaging="True" onrowcommand="GV1_RowCommand" > <Columns> <asp:BoundField DataField="EmployeeID" HeaderText="EmployeeID" /> <asp:BoundField DataField="LastName" HeaderText="LastName" /> <asp:BoundField DataField="FirstName" HeaderText="FirstName" /> <asp:BoundField DataField="Title" HeaderText="Title" /> <asp:TemplateField> <ItemTemplate> <asp:LinkButton runat="server" Text="Popup" CommandName="EditRow" CausesValidation="false" ID="lnkPopup"></asp:LinkButton> </ItemTemplate> </asp:TemplateField> </Columns> </asp:GridView> <asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:NORTHWNDConnectionString%>" SelectCommand="SELECT [EmployeeID], [LastName], [FirstName], [Title] FROM [Employees]"></asp:SqlDataSource> </asp:Panel> <asp:Panel ID="popupPanel" runat="server" CssClass="modalPopup" Height="200px" Width="200px" style="display:none"> Click To Display Authors Name: <asp:Label ID="Label1" runat="server"></asp:Label> <asp:Button ID="btnShowAuthorName" runat="server" Text="Show Author's Name" OnClientClick="getName(); return false;"></asp:Button><br /> <asp:Label ID="lblAuthorsName" runat="server" BackColor="Beige" ForeColor="Red"></asp:Label> <br /> <br /> <asp:Button ID="btnOk" runat="server" Text="OK" /> <asp:Button ID="btnCancel" runat="server" Text="Cancel" /> </asp:Panel><cc1:ModalPopupExtender ID="ModalPopupExtender2" runat="server" PopupControlID="popupPanel" BackgroundCssClass="modalBackground" TargetControlID="Label2" CancelControlID="btnCancel" OkControlID="btnOk"> </cc1:ModalPopupExtender> <div style="display:none"> <asp:Label ID="Label2" runat="server" Text="Label"></asp:Label></div> <script type="text/javascript" language="javascript">function getName(){ var labelValue = $get("<%=Label1.ClientID%>").innerHTML; } </script> </form></body></html>

Best regards,

Jonathan

Hi Varun,

Here is another sample which won't postback when click to show the ModalPopupExtender.

<%@. Page Language="C#" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"
<script runat="server"
protected void Page_Load(object sender, EventArgs e)
{
//Attach a Javascript funtion to the LinkButton.
LinkButton myLinkButton;
for (int i = 0; i < GridView1.Rows.Count; i++)
{
myLinkButton = (LinkButton)GridView1.Rows[i].Cells[4].FindControl("LinkButton1");
myLinkButton.Attributes.Add("onclick", "shopModalPopup('" + GridView1.Rows[i].Cells[0].Text + "');return false;");
}
}
</script
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title>Untitled Page</title>
<style>
.modalBackground {
background-color:Gray;
filter:alpha(opacity=70);
opacity:0.7;
}

.modalPopup {
background-color:#FFD9D5;
border-width:3px;
border-style:solid;
border-color:Gray;
padding:3px;
width:250px;
}
</style>
</head>
<body>
<form id="form1" runat="server">
<asp:ScriptManager ID="ScriptManager1" runat="server">
</asp:ScriptManager>
<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" DataKeyNames="EmployeeID"
DataSourceID="SqlDataSource1">
<Columns>
<asp:BoundField DataField="EmployeeID" HeaderText="EmployeeID" InsertVisible="False"
ReadOnly="True" SortExpression="EmployeeID" ItemStyle-Width="0" />
<asp:BoundField DataField="LastName" HeaderText="LastName" SortExpression="LastName" />
<asp:BoundField DataField="FirstName" HeaderText="FirstName" SortExpression="FirstName" />
<asp:BoundField DataField="Title" HeaderText="Title" SortExpression="Title" />
<asp:TemplateField>
<ItemTemplate>
<asp:LinkButton ID="LinkButton1" runat="server">Click On Me</asp:LinkButton>
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
<asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:NORTHWNDConnectionString%>"
SelectCommand="SELECT [EmployeeID], [LastName], [FirstName], [Title] FROM [Employees]">
</asp:SqlDataSource>
<asp:Panel ID="Panel1" runat="server" CssClass="modalPopup" Height="200px" Width="300px" style="display:none">
<asp:UpdatePanel ID="UpdatePanel1" runat="server">
<ContentTemplate>
EmployeeID:<asp:TextBox ID="tbEmployeeID" runat="server"></asp:TextBox> <br/>
Reason:<asp:TextBox ID="tbReason" runat="server"></asp:TextBox>
</ContentTemplate>
</asp:UpdatePanel>
<asp:Button ID="btnCancel" runat="server" Text="Cancel" />
</asp:Panel>
<div style="display: none">
<asp:Button ID="Button1" runat="server" Text="Button" /></div>
<ajaxToolkit:ModalPopupExtender ID="ModalPopupExtender1" runat="server" TargetControlID="Button1"
PopupControlID="Panel1" CancelControlID="btnCancel" BackgroundCssClass="modalBackground">
</ajaxToolkit:ModalPopupExtender>
<script type="text/javascript" language="javascript">
function shopModalPopup(employeeID){
//show the ModalPopupExtender
$get("<%=tbEmployeeID.ClientID%>").value = employeeID;
$get("<%=tbReason.ClientID%>").value ="";
$find("<%=ModalPopupExtender1.ClientID%>").show();
}
</script>
</form>
</body>
</html>

Best regards,

Jonathan

Saturday, March 24, 2012

CalendarPopup not showing up over PopupControlExtender

I have a panel that is popped up via a PopupControlExtender and inside that panel I have a CalendarExtender that pops up but it is NOT showing up over top of the PopupControlExtender that is already popped up...How can I force the CalendarExtender to pop up over everything?

Thanks, Greg

I got the calendarExtender to work after I took it out of being contained in a UserControl... There must be something buggy with the CalendarExtedner being in a UserControl??

Wednesday, March 21, 2012

calendarextender questions

How do i let the users only pick the months instead of days? which mean i will be showing the months instead of the days which will be exclude from the calendar.

I would like to close the calendar when i click anywhere on the page. at this moment i only can close the calendar at the popupbutton or by selecting a date.
Any idea of how to achieve this effect like the good old calendar?

Anybody has some good theme for the ajax calendar? I want to achieve the same effect as the default one but only changing the color.
if I use a CSS file, the whole calendar theme is overwritten.

Sorry I am not an expert in javascript that's why all these questions.

Hi Donkaiser,

My understanding of your issue is that your have thress questions in your thread list below:

donkaiser:
How do i let the users only pick the months instead of days?

I'm afraid that there's no function can support your idea unless you modify the source code.

donkaiser:
I would like to close the calendar when i click anywhere on the page. at this moment i only can close the calendar at the popupbutton or by selecting a date.
Any idea of how to achieve this effect like the good old calendar?

Yes , please add this javascript function to your page:

function document.onclick(){
$find("<%=CalendarExtender1.ClientID %>").hide();
}

donkaiser:
Anybody has some good theme for the ajax calendar? I want to achieve the same effect as the default one but only changing the color.
if I use a CSS file, the whole calendar theme is overwritten.

I haven't found a satisfied one yet by now but you can change it based on its own css style.

I hope this helps.

Best regards,

Jonathan

"Yes , please add this javascript function to your page:

function document.onclick(){
$find("<%=CalendarExtender1.ClientID %>").hide();
}"

Where should i put this function in my page? like the header? does it have to include the tag

Hi Donkaiser,

This is another sample address which for other customer's related question.There are similar.In your case ,you just need to replace the Javascript functions with

function document.onclick(){
$find("<%=CalendarExtender1.ClientID %>").hide();
}"

This sample shows how to show the calendar when the TextBox'sonfocus and onclick envent is fired and hide the calendar after a date is selected.

<%@. Page Language="C#" %><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><script runat="server"></script><html xmlns="http://www.w3.org/1999/xhtml" ><head id="Head1" runat="server"> <title>Untitled Page</title></head><body> <form id="form1" runat="server"> <asp:ScriptManager ID="ScriptManager1" runat="server"> </asp:ScriptManager> <asp:TextBox ID="TextBox1" runat="server"></asp:TextBox> <ajaxToolkit:CalendarExtender ID="CalendarExtender1" runat="server" TargetControlID="TextBox1" Format="yyyy-MM-dd" PopupButtonID="Button1"> </ajaxToolkit:CalendarExtender><asp:Button ID="Button1" runat="server" Text="Button" /> <script type="text/javascript" language="javascript"> function pageLoad(){ $addHandler($get("<%=TextBox1.ClientID%>"),"focus",showCalendar); } function showCalendar(){ $find("<%=CalendarExtender1.ClientID%>").show(); } function document.onclick(){ if(event.srcElement.id!="<%=TextBox1.ClientID%>") $find("<%=CalendarExtender1.ClientID%>").hide(); } </script> </form></body></html>

I hope this helps.

Best regards,

Jonathan

Wednesday, March 28, 2012

calling javascript function after asychronous call back event

Monday, March 26, 2012

Call Server Side Function before showing Modal Popup

Saturday, March 24, 2012

CalendarPopup not showing up over PopupControlExtender

Wednesday, March 21, 2012

calendarextender questions

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