dropdownlist inside a radwindow

[sirisha]

I'm using a dropdownlist inside a radwindow.
If I set the Enable View state of Window manager to 'false', I'm unable to capture the selected item value of the dropdownlist on server side and if I set it to 'true' I'm able to capture the selected item value but the radwindow keeps on opening on each postback.

[Marin Bratanov]

Hi Sirisha,

I am not sure what your scenario is, but it looks like that the DropDownList inherits the disabled ViewState from the WindowManager. If that is the case simply try forcing it to on by adding EnableViewState="true" to its declaration. As explained in the following blog post: http://bloggingabout.net/blogs/dennis/archive/2004/09/29/1416.aspx - the dropdownlist requires its ViewState to populate the SelectedIndex value. As you can see in the video from my experiment now the dropdownlist seems to be working correctly.

On a side note -  if you have set the VisibleOnPageLoad property of the said RadWindow to true it is expected to show up on every postback. You should either reset it to false in a method, after whose execution you do not want the RadWindow visible, or simply remove it and open the RadWindow on the client side. The approach depends on your custom scenario and needs.

If the above does not help you resolve your issue please send me some more detail on your exact setup and code so that I can provide a more to the point answer.

Regards,
Marin
the Telerik team

[sirisha]

<telerik:RadWindowManager ID="WinMgr" runat="server" EnableViewState="false" DestroyOnClose="true" >
    <Windows>
               <telerik:RadWindow ID="WinCreate" runat="server" Modal="true" Height="210" Width="430" VisibleOnPageLoad="false"
         VisibleStatusbar="false" VisibleTitlebar="false" EnableShadow="true" OnClientClose="OnClientClose">
            <ContentTemplate>
                 <table style="width:100%;">
                    <tr>
                        <td align="left" style="border-width: 0px; width: 167px">
                            <asp:Label ID="Label1" runat="server" Font-Bold="True" Font-Size="Medium"
                                Text="Create Review Period"></asp:Label>
                        </td>
                        <td align="left" style="border-width: 0px; ">
                             </td>
                    </tr>
                    <tr>
                        <td align="right" style="border-width: 0px; width: 167px">
                            <asp:Label ID="Label5" runat="server" Font-Bold="True" Font-Size="Small"
                                Text="Review Month"></asp:Label>
                        </td>
                        <td align="left" style="border-width: 0px;">
                            <telerik:RadComboBox ID="ddRevMonth" runat="server" AutoPostBack="true" EnableViewState="true">
                            </telerik:RadComboBox>
                        </td>
                    </tr>

                    <tr>
                    <td style="border-width: 0px;"></td>
                        <td align="center" style="border-width: 0px; ">
                            <asp:Button ID="btnSaveCreate" runat="server" Font-Bold="True" Font-Size="Small"
                                onclick="btnRevPeriod_Click" Text="Save" />

                            <asp:Button ID="btnCancelCreate" runat="server" Font-Bold="True" Font-Size="Small" Text="Cancel"
                             OnClientClick="CloseCreateRevWindow()" />

                        </td>
                    </tr>
                </table>

            </ContentTemplate>
        </telerik:RadWindow>
          </Windows>
    </telerik:RadWindowManager>
<asp:Button ID="btnCreate" runat="server" Font-Size="Small"
                                                onclick="btnCreate_Click" Text="Create Review Period" />

protected void btnCreate_Click(object sender, EventArgs e)
    {
        //Get the Latest Review Period, if it exists
        DataLayer dl = new DataLayer();
        dl.ConnectionString = ConfigurationManager.AppSettings["SoxConnectionStr"].ToString();

        DataTable dt= dl.getLatestReviewPeriod();

        ddRevMonth.Items.Clear();
        int i = 0;
        int count = 0;
        DateTime month;

        if ((dt == null) || (dt.Rows.Count == 0))
        {

            month = DateTime.Today;

        }
        else
        {
            month=Convert.ToDateTime(dt.Rows[0]["ReviewDate"]);
        }
        while (i < 12)
        {

            DateTime NextMont = month.AddMonths(count);
            string year = NextMont.Year.ToString();
            RadComboBoxItem citem = new RadComboBoxItem();
            citem.Text = NextMont.ToString("MMMM").Substring(0, 3) + "-" + year.Substring(2, 2);
            citem.Value = NextMont.ToString();
            ddRevMonth.Items.Add(citem);
            foreach (GridDataItem item in RGReviewPeriod.Items)
            {
                string gMonth = item["ReviewMonth"].Text;
                if (citem.Text == gMonth)
                {
                    ddRevMonth.Items.Remove(citem);
                    i--;
                    break;
                }
            }
            i++;
            count++;

        }

        WinCreate.VisibleOnPageLoad = true;

    }
protected void btnRevPeriod_Click(object sender, EventArgs e)
    {

        DateTime revMonth = Convert.ToDateTime(ddRevMonth.SelectedItem.Value);
        DateTime revDate = Convert.ToDateTime(revMonth.Month + "/1/" + revMonth.Year);
        try
        {
            DataLayer dl = new DataLayer();
            dl.ConnectionString = ConfigurationManager.AppSettings["SoxConnectionStr"].ToString();
            int result = dl.insertReviewPeriod(revDate, user);
          }
        catch (Exception ex)
        {
            Utilities.ErrorLogger errLog = new Utilities.ErrorLogger();
            errLog.WriteToErrorLog(ex.Message, ex.StackTrace, "btnRevPeriod_Click in Set Review Period",
           HttpContext.Current.Session["Name"].ToString());
            Response.Redirect("~/Aspx/Messages/errMessage.aspx?err=error");
        }


    }

Above is the code I'm using in  my project.I'm not sure what I'm doing wrong..

[Kalina]

Hello Sirisha,

Let me suggest you remove the AutoPostBack property of the RadComboBox and get the SelectedValue in this way:

protected void btnRevPeriod_Click(object sender, EventArgs e)
{
    RadComboBox InnerCombo = WinCreate.ContentContainer.FindControl("ddRevMonth") as RadComboBox;
    DateTime revMonth = Convert.ToDateTime(InnerCombo.SelectedValue);
...
...
...

You can find more details at the sample attached.
Please let me know if this helps.

Greetings,
Kalina
the Telerik team

[sirisha]

Thank you.. it worked.