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Rebind a RadGrid on User Control from another User Control???

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Ajax

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answered on 11 Oct 2010, 04:31 AM

I had tried and I have some problem.
this is My Main.Master

<body>

<form id="form1" runat="server">

<div style="height: 174px; width: 668px">

<telerik:RadAjaxLoadingPanel ID="RadAjaxLoadingPanel1" Runat="server"

Skin="Default">

</telerik:RadAjaxLoadingPanel>

<telerik:RadAjaxManager ID="RadAjaxManager1" runat="server">

</telerik:RadAjaxManager>

<asp:ContentPlaceHolder ID="ContentPlaceHolder1" runat="server">

</asp:ContentPlaceHolder>

</div>

<div>

<table width="100%" style="height: 297px">

<tr>

<td class="style1"><asp:ContentPlaceHolder ID="ContentPlaceHolder2" runat="server"></asp:ContentPlaceHolder></td>

<td class="style2">

<asp:ContentPlaceHolder ID="ContentPlaceHolder4" runat="server" />

</td>

</tr>

</table>

</div>

<div>

<asp:Panel ID="Panel1" runat="server">

<asp:ContentPlaceHolder ID="ContentPlaceHolder3" runat="server">

</asp:ContentPlaceHolder>

</asp:Panel>

</div>

</form>

</body>

This is my Main.aspx

<asp:Content ID="Content1" ContentPlaceHolderID="head" runat="server">

</asp:Content>

<asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder1" runat="server">

<uc3:Calendar ID="Calendar1" runat="server" />

</asp:Content>

<asp:Content ID="Content3" runat="server"

contentplaceholderid="ContentPlaceHolder2">

</asp:Content>

<asp:Content ID="Content4" runat="server"

contentplaceholderid="ContentPlaceHolder4">

<uc1:Register ID="Register1" runat="server" />

</asp:Content>

<asp:Content ID="Content5" runat="server"

contentplaceholderid="ContentPlaceHolder3">

<uc6:Database ID="Database1" runat="server" />

</asp:Content>

OK, I only use ContentPlaceHolder4 for Register.ascx and ContentPlaceHolder3 for Database.ascx ( include RadGrid for Account information in Database ).
This is Main.aspx.cs:

protected void Page_Load(object sender, EventArgs e)

{

//Load

Page.Master.FindControl("ContentPlaceHolder4").Controls.Add(LoadControl("Register.ascx"));

Page.Master.FindControl("ContentPlaceHolder4").Controls[1].ID = "Register1";

//Ta muốn thiết lập ảnh hưởng khi nhấn buttonRegister trên Register.aspx

//lên Database.aspx thông qua Panel1 thì ta cần thiết lập config của

//RadAjaxManager

Button AjaxButtonLoad = (Button)Page.Master.FindControl("ContentPlaceHolder4").FindControl("Register1").FindControl("bttRegister");

//   Button AjaxButtonClear = (Button)Content("ContentPlaceHolder3").FindControl("UserControl1").FindControl("btnClear");

//Get the manager and the panel from the MasterPage

RadAjaxManager AjaxManager = (RadAjaxManager)Page.Master.FindControl("RadAjaxManager1");

Panel MyPanel = (Panel)Page.Master.FindControl("Panel1");

RadAjaxLoadingPanel loadpanel = (RadAjaxLoadingPanel)Page.Master.FindControl("RadAjaxLoadingPanel1");

//Add the necessary AJAX settings - buttons update the panel in order to load the second user control there

AjaxManager.AjaxSettings.AddAjaxSetting(AjaxButtonLoad, MyPanel);

// AjaxManager.AjaxSettings.AddAjaxSetting(AjaxButtonClear, MyPanel, null);

}

protected override bool OnBubbleEvent(object source, System.EventArgs args)

{

CommandEventArgs commandArgs = args as CommandEventArgs;

//determine whether to load the user control depending on bubbled button command

if (commandArgs != null)

{

if (commandArgs.CommandName == "Load")

{

Page.Master.FindControl("ContentPlaceHolder3").Controls.Add(LoadControl("Database.ascx"));

Page.Master.FindControl("ContentPlaceHolder3").Controls[1].ID = "Database1";

}

//else if (commandArgs.CommandName == "Clear")

//{

// //do nothing. the control won't be loaded anyway

//}

}

return base.OnBubbleEvent(source, args);

}

I want to Add the necessary AJAX settings - buttons update the panel in order to load the database.ascx .
And Finally, this is Register.ascx.cs:

public event EventHandler BtnClick;

protected

void bttRegister_Click(object sender, EventArgs e)

{

Telerik.ActiveSkill.UI.bizFrame.MyConnection myconn = new Telerik.ActiveSkill.UI.bizFrame.MyConnection();

if (myconn.CheckUser(txtUser.Text)==false)

{

Literal1.Text = " Sorry, this string is illegal or Exits";

}

else if( myconn.ChechPass(txtPass.Text)==false)

{

Literal2.Text="Only Alpha Character and Number. Min length is 4 and Max is 20";

}

else if (txtPass.Text!=txtConfirmPass.Text)

{

Literal3.Text= " Confirm password doesn't match Password";

}

else if (myconn.CheckEmail(txtEmail.Text) == false)

{

Literal4.Text = " Email isn't illegal or Exits";

}

else

{

string Pass = myconn.EncodeMD5(txtPass.Text).Substring(0,20);

myconn.Insertuser(txtUser.Text, Pass, txtEmail.Text);

MCSIsmi.bizFrame.Utility.ShowErrorFunction.ShowError(this.Page, "Ban đã đăng ký thành công");

// Control Load = LoadControl("Main.aspx");

}

if (BtnClick != null)

{

BtnClick(sender, e);

}

}

No code - behind in Database.ascx.cs

My problem is when I debug, VS appears error "Object reference not set to an instance of an object." at AjaxManager.AjaxSettings.AddAjaxSetting(AjaxButtonLoad, MyPanel);
I had tried to some way but I cann't fix it. When I tested, I saw AjaxButtonLoad was fine " Text= Register", hmmmmm and I didn't know what problem is.
If I configed direct on RadajaxManager in Main.Master between ContentPlaceHolder 4 and Panel1, It was fine. And I want to Load when I put Register.ascx and Database.ascx direct on Main.aspx, not :
Page.Master.FindControl("ContentPlaceHolder4").Controls.Add(LoadControl("Register.ascx"));
Page.Master.FindControl("ContentPlaceHolder4").Controls[1].ID = "Register1";
Page.Master.FindControl("ContentPlaceHolder3").Controls.Add(LoadControl("Database.ascx"));
Page.Master.FindControl("ContentPlaceHolder3").Controls[1].ID = "Database1";
Any help ? Thanks a lot!!!!

answered on 11 Oct 2010, 01:57 PM

Hello long,

The posted code looks ok to me.
As the provided information is not enough to isolate the root cause of the issue you are facing, please prepare a simple, fully runnable reproduction demo, open a new support ticket and send it to us along with very detailed reproduction steps and explanations and we will debug it locally and we will do our best to help.

Regards,
Maria Ilieva
the Telerik team

Do you want to have your say when we set our development plans? Do you want to know when a feature you care about is added or when a bug fixed? Explore the Telerik Public Issue Tracking system and vote to affect the priority of the items

answered on 12 Oct 2010, 02:13 AM

Now It works good. I don't know why, I config direct on RadAjaxManager on Main.aspx between Contentplaceholder4 and ContentPlaceholder3 that not need to use code-behind to create.
This is code in Main.aspx.cs

protected override bool OnBubbleEvent(object source, System.EventArgs args)

{

CommandEventArgs commandArgs = args as CommandEventArgs;

//determine whether to load the user control depending on bubbled button command

if (commandArgs != null)

{

if (commandArgs.CommandName == "Load")

{

// Page.Master.FindControl("ContentPlaceHolder3").Controls.Add(LoadControl("Database.ascx"));

// Page.Master.FindControl("ContentPlaceHolder3").Controls[1].ID = "Database1";

RadGrid radgrid=(RadGrid)Page.Master.FindControl("ContentPlaceHolder3").FindControl("Database1").FindControl("RadGrid1");

radgrid.Rebind();

}

//else if (commandArgs.CommandName == "Clear")

//{

// //do nothing. the control won't be loaded anyway

//}

}

return base.OnBubbleEvent(source, args);

}

and a little in Register.ascx.cs

public event EventHandler BtnClick;

if (BtnClick != null)

{

BtnClick(sender, e);

}

Thanks a lot , Telerik, and If can, I hope u can show me in this topic http://www.telerik.com/community/forums/aspnet-ajax/grid/custom-edit-form-with-web-user-control.aspx

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Rebind a RadGrid on User Control from another User Control???

6 Answers, 1 is accepted