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javascript from behind the code

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dingen asked on 17 Mar 2010, 07:24 AM

I am trying to trigger the ShowDialog function from behind the code?

reg

                    <%@ Page Language="VB" AutoEventWireup="false" CodeFile="Default2.aspx.vb" Inherits="Default2" %>         
                     
            <%@ Register Assembly="RadWindow.Net2" Namespace="Telerik.WebControls" TagPrefix="radW" %>         
            <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">         
            <html xmlns="http://www.w3.org/1999/xhtml">         
            <head id="Head1" runat="server">         
                <title>Untitled Page</title>         
            </head>         
            <body>         
                <form id="Form1" method="post" runat="server">         
                <p>         
                    <b>Returning multiple Values From a Dialog</b>         
                    <br />         
                </p>         
                <script type="text/javascript">         
                    //Show the window         
                    function ShowDialog() {         
                        var oWnd = window.radopen(null, "DialogWindow");         
                        oWnd.SetUrl(oWnd.GetUrl());         
                        return oWnd;         
                    }         
                             
                    //Called when a window is being shown. Good for setting an argument to the window          
                    function OnClientShow(radWindow) {         
                        //Create a new Object to be used as an argument to the radWindow         
                        var arg = new Object();         
                        //Using an Object as a argument is convenient as it allows setting many properties.         
                        arg.NameValue = document.getElementById("NameArea").value;         
                        arg.ProfessionValue = document.getElementById("ProfessionArea").value;         
                     
                        //Set the argument object to the radWindow               
                        radWindow.Argument = arg;         
                    }         
                     
                    function CallBackFunction(radWindow, returnValue) {         
                        if (returnValue.NameValue) document.getElementById("NameArea").value = returnValue.NameValue;         
                        if (returnValue.NameValue) document.getElementById("ProfessionArea").value = returnValue.ProfessionValue;         
                    }         
                     
                    // Called when a window is being closed.         
                    function OnClientClose(radWindow) {         
                        //Another option for passing a callback value         
                        //Set the radWindow.Argument property in the dialog         
                        //And read it here --> var oValue = radWindow.Argument;                                              
                        //Do cleanup if necessary         
                    }            
                                                 
                </script>         
                <asp:Label ID="InjectScript" runat="server" Width="410px"></asp:Label>         
                <p>         
                    Text to be modified from the dialog:         
                    <br />         
                    Name:         
                    <textarea id="NameArea" rows="1" cols="20">John Smith</textarea>         
                    <br />         
                    Profession:<textarea id="ProfessionArea" rows="5" cols="20">VB Developer</textarea>         
                    <asp:Button ID="Button1" runat="server" Text="Button" />         
                    <br />         
                    <button class="Button" style="width: 250px" onclick="ShowDialog();return false;"         
                        type="button">         
                        Show dialog (force dialog refresh)</button>         
                </p>         
                <p>         
                    (Open by client script)         
                    <br />         
                    <radW:RadWindowManager ID="Singleton" runat="server" OnClientClose="OnClientClose"         
                        OnClientShow="OnClientShow" ClientCallBackFunction="CallBackFunction" VisibleOnPageLoad="false">         
                        <Windows>         
                            <radW:RadWindow ID="DialogWindow" OffsetElementId="NameArea" Left="250px" Modal="true"         
                                runat="server" Width="370px" Height="310px" Title="User List Dialog" NavigateUrl="./Dialog.aspx">         
                            </radW:RadWindow>         
                        </Windows>         
                    </radW:RadWindowManager>         
                </p>         
                <p>         
                    &nbsp;</p>         
                <div style="width: 456px; height: 260px; text-align: justify">         
                    <p>         
                        The example is based on <strong>t</strong>elerik's demo <a href="http://www.telerik.com/r.a.d.controls/Window/Examples/DialogReturnValue/DefaultCS.aspx"         
                            target='_blank"'>Returning Values From A Dialog </a>and <strong>t</strong>elerik's         
                        KB article <a href="http://www.telerik.com/Default.aspx?PageId=2514&amp;b454K=xg8&amp;b454T=o8c"         
                            target="_blank">(ID#664) Providing an argument to a dialog. Return value from a         
                            dialog, assign and invoke callback function</a>.         
                    </p>         
                    <p>         
                        The approach is the same as explained in the KB article above and the only difference         
                        is that instead of only one, we are passing two values to and from the dialog. If         
                        you need more values to be passed - the logic stays the same.         
                    </p>         
                    <p>         
                        For more information, please check the comments in the code.         
                    </p>         
                </div>         
                </form>         
            </body>         
            </html>         
                     

                    Imports Telerik.WebControls         
                     
            Partial Class Default2         
                Inherits System.Web.UI.Page         
                     
                         
                Protected Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button1.Click         
                    InjectScript.Text = "<script type='text/javascript'>ShowDialog()</" + "script>"         
                End Sub         
            End Class         
                     

3 Answers, 1 is accepted

answered on 18 Mar 2010, 10:44 AM

Hello dingen,

I'd suggest that you use the ScriptManager's RegisterStartUpScript() method to trigger the function in question:

if (ScriptManager.GetCurrent(base.Page).IsInAsyncPostBack)

ScriptManager.RegisterStartupScript(this, this.GetType(), "DialogueScript" + this.ClientID.ToString(), "ShowDialogue()", false);

else

this.Page.ClientScript.RegisterStartupScript(this.GetType(), this.ClientID, "ShowDialogue()");

I hope it helps.

Best wishes,
Tsvetoslav
the Telerik team

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answered on 23 Mar 2010, 02:31 PM

startupscript.zip

Hello dingen,

A little correction to the previous code-snippet, sorry for that:

if (ScriptManager.GetCurrent(base.Page).IsInAsyncPostBack)

ScriptManager.RegisterStartupScript(this, this.GetType(), "DialogueScript" + this.ClientID.ToString(), "ShowDialogue();", true);

else

this.Page.ClientScript.RegisterStartupScript(this.GetType(), this.ClientID, "ShowDialogue();",true);

Attached is also a small sample.

All the best,
Tsvetoslav
the Telerik team