I have an issue with RadComboBox. After postback the drop down list no longer visible. The postback is redirected to a new window. I know it worked in previous version but it does not work in new version.
Thank you.
ASP CODE
Code:
Thank you.
ASP CODE
| <%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %> |
| <%@ Register Assembly="Telerik.Web.UI" Namespace="Telerik.Web.UI" TagPrefix="telerik" %> |
| <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd"> |
| <html xmlns="http://www.w3.org/1999/xhtml"> |
| <head runat="server"> |
| <title>Untitled Page</title> |
| </head> |
| <body> |
| <form id="form1" runat="server"> |
| <telerik:RadScriptManager ID="RadScriptManager1" runat="server"> |
| </telerik:RadScriptManager> |
| <telerik:RadStyleSheetManager ID="RadStyleSheetManager1" runat="server"> |
| </telerik:RadStyleSheetManager> |
| <telerik:RadAjaxManager ID="RadAjaxManager1" runat="server"> |
| </telerik:RadAjaxManager> |
| <div> |
| <telerik:RadComboBox ID="cmbState" runat="server" CausesValidation="True" Height="140px" |
| MarkFirstMatch="True" Skin="Vista" ToolTip="Select a State" Width="150px"> |
| <Items> |
| <telerik:RadComboBoxItem runat="server" Text="RadComboBoxItem1" /> |
| <telerik:RadComboBoxItem runat="server" Text="RadComboBoxItem2" /> |
| <telerik:RadComboBoxItem runat="server" Text="RadComboBoxItem3" /> |
| <telerik:RadComboBoxItem runat="server" Text="RadComboBoxItem4" /> |
| </Items> |
| <CollapseAnimation Duration="200" Type="OutQuint" /> |
| <ExpandAnimation Type="OutQuart" /> |
| </telerik:RadComboBox> |
| <asp:Button ID="Button1" runat="server" PostBackUrl="~/Default2.aspx" Text="Button" |
| UseSubmitBehavior="False" /> |
| </div> |
| </form> |
| </body> |
| </html> |
Code:
| using System; |
| using System.Data; |
| using System.Configuration; |
| using System.Web; |
| using System.Web.Security; |
| using System.Web.UI; |
| using System.Web.UI.WebControls; |
| using System.Web.UI.WebControls.WebParts; |
| using System.Web.UI.HtmlControls; |
| using System.Text; |
| public partial class _Default : System.Web.UI.Page |
| { |
| protected void Page_Load(object sender, EventArgs e) |
| { |
| if (!IsPostBack) |
| { |
| //Form.Target = "_blank"; |
| } |
| } |
| protected void Page_PreRender(object sender, EventArgs e) |
| { |
| RegisterResetPostback(Button1); |
| } |
| static PostBackOptions GetPostBackOptions(Button button) |
| { |
| PostBackOptions options = new PostBackOptions(button, string.Empty); |
| options.ClientSubmit = false; |
| if (button.Page != null) |
| { |
| if (button.CausesValidation && (button.Page.GetValidators(button.ValidationGroup).Count > 0)) |
| { |
| options.PerformValidation = true; |
| options.ValidationGroup = button.ValidationGroup; |
| } |
| if (!string.IsNullOrEmpty(button.PostBackUrl)) |
| { |
| options.ActionUrl = HttpUtility.UrlPathEncode(button.ResolveClientUrl(button.PostBackUrl)); |
| } |
| options.ClientSubmit = !button.UseSubmitBehavior; |
| } |
| return options; |
| } |
| static void RegisterResetPostback(Button button) |
| { |
| if (button == null || button.Page == null) |
| { |
| return; |
| } |
| string postBackEventReference = button.Page.ClientScript.GetPostBackEventReference(GetPostBackOptions(button), false); |
| if (postBackEventReference != null) |
| { |
| if (!postBackEventReference.EndsWith(";")) |
| { postBackEventReference += ";"; } |
| button.OnClientClick = string.Format("return {0}_OnPostBack(this);", button.UniqueID); |
| if (!button.Page.ClientScript.IsStartupScriptRegistered(button.GetType(), button.UniqueID)) |
| { |
| StringBuilder buffer = new StringBuilder(2000); |
| buffer.AppendLine(); |
| buffer.AppendLine("\tfunction " + button.UniqueID + "_OnPostBack(sender) {"); |
| buffer.AppendLine("\t\tif(sender!=null && sender.form !=null) {"); |
| buffer.AppendLine("\t\t\tvar action = sender.form.action;"); |
| buffer.AppendLine("\t\t\tvar target = sender.form.target;"); |
| buffer.AppendLine("\t\t\tsender.form.target = \"_blank\";"); |
| buffer.AppendLine("\t\t\t"); |
| buffer.AppendLine("\t\t\t" + postBackEventReference); |
| buffer.AppendLine("\t\t\t"); |
| buffer.AppendLine("\t\t\tsender.form.action=action;"); |
| buffer.AppendLine("\t\t\tsender.form.target=target;"); |
| buffer.AppendLine("\t\t}"); |
| buffer.AppendLine("\t\treturn true;"); |
| buffer.AppendLine("\t}"); |
| buffer.AppendLine(); |
| button.Page.ClientScript.RegisterStartupScript(button.GetType(), button.UniqueID, buffer.ToString(), true); |
| } |
| } |
| } |
| } |
1 Answer, 1 is accepted
0
Hello Maxim Konstantinovski,
Please find attached project illustrating that everything worked as expected at our side. Download it and test it. If this does not help you, please send us a simple running project illustrating the problem to test it locally.
Regards,
Rosi
the Telerik team
Instantly find answers to your questions at the new Telerik Support Center
Please find attached project illustrating that everything worked as expected at our side. Download it and test it. If this does not help you, please send us a simple running project illustrating the problem to test it locally.
Regards,
Rosi
the Telerik team
Instantly find answers to your questions at the new Telerik Support Center