Not able to access dropdown value inside modalpopup

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I was able to select dropdown value inside of modalpopup. But, when I added the form to a masterpage and move the scriptmanager to the Masterpage. The below events started happening

Modal popup is inside the update panel. I have a dropdown control inside modal popup. When i select the data in the dropdown and click ok on the modal popup it always shows the dropdown selectedvalue as first index no matter what i select . I am not able to find the solution for this.

The problem started when I added the code to a existing master page which has the following scriptmanager.

<asp:ScriptManager
ID="ScriptManagerRAMS"
runat="server"
ScriptMode="Release" >

Here are the steps
1. The modual popup is launch from the Grid linkEdit. The module popup is within a panel. The Grid is outside of the panel within the Update Panel that surrounds everything.

Step 2. I load the dropdown list within the Preload with a

if (!IsPostBack)
{
The dropdown are load here.
}

3. When the modal popup is visible the dropdown has the correct value. But when you set a watch you see the default value of {Please Select}. Then I attempt to select a different value and you see {Please Select}. You see the same thing within the OnSelectedIndexChanged.

Note:
I have this code within a MasterPage. There is Update panel around the everything. Within there is simply a panel around the dropdown links. I can see the label content but the only content that I see on the dropdown is the default selection. But, what is displayed is correct. When I try to make a change to the selection. I still get the default setting. This work before it was added to the masterpage.

Sample Code Layout
<asp:UpdatePanel ID="UpdatePanel1" runat="server"> <contenttemplate>

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

<asp:DropDownList ID="DropDownList1" runat="server" AutoPostBack="true" OnSelectedIndexChanged="DropDownList1_SelectedIndexChanged"> <asp:ListItem>Red
<asp:ListItem>Green <asp:ListItem>Blue

<Triggers>

<asp:AsyncPostBackTrigger ControlID="DropDownList1" EventName="SelectedIndexChanged" /> </Triggers>

I am using the following in the application that is working.
<%-- <asp:ToolkitScriptManager ID="tsm" runat="server">
--%>

The one with the masterpage that is not working is using the following
<asp:ScriptManager ID="ScriptManagerRAMS" runat="server" ScriptMode="Release" >

I tried using the one below and get a error message Parser Error Message: Unknown server tag 'asp:ToolkitScriptManager'.

<%-- <asp:ToolkitScriptManager ID="tsm" runat="server">

Posted 12-Jan-15 7:35am

Member 11227881

Updated 13-Jan-15 10:08am

v6

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Comments

ZurdoDev 12-Jan-15 16:03pm

Click Improve question and post the relevant code.

BillWoodruff 12-Jan-15 19:43pm

Please add more detail: is this a Web based project, or WPF ? ... or ?

Member 11227881 13-Jan-15 10:43am

<asp:UpdatePanel ID="UpdatePanel1" runat="server"> <contenttemplate> <asp:Panel ID="Panel1" runat="server"> <asp:DropDownList ID="DropDownList1" runat="server" AutoPostBack="true" OnSelectedIndexChanged="DropDownList1_SelectedIndexChanged"> <asp:ListItem>Red <asp:ListItem>Green <asp:ListItem>Blue <Triggers> <asp:AsyncPostBackTrigger ControlID="DropDownList1" EventName="SelectedIndexChanged" /> </Triggers>

Member 11227881 13-Jan-15 10:43am

I have this code within a MasterPage. There is Update panel around the everything. Within there is simply a panel around the dropdown links. I can see the label content but the only content that I see on the dropdown is the default selection. But, what is displayed is correct. When I try to may a change to the selection. I still get the default setting. I have attempted what you said. Again within the updated panel you have a grid that has a link that calls the popup and the popup in within simple a panel. This work before it was added to the masterpage.

Member 11227881 13-Jan-15 10:58am

The problem started when I added the code to a existing master page which has the following scriptmanager.

<asp:ScriptManager
ID="ScriptManagerRAMS"
runat="server"
ScriptMode="Release" >

Here are the steps
1. The modual popup is launch from the Grid linkEdit. The module popup is within a panel. The Grid is outside of the panel within the Update Panel that surrounds everything.

Step 2. I load the dropdown list within the Preload with a

if (!IsPostBack)
{
The dropdown are load here.
}

3. When the modal popup is visible the dropdown has the correct value. But when you set a watch you see the default value of {Please Select}. Then I attempt to select a different value and you see {Please Select}. You see the same thing within the OnSelectedIndexChanged.

I am using the following in the application that is working.
<%-- <asp:ToolkitScriptManager ID="tsm" runat="server">
--%>

The one with the masterpage that is not working is using the following
<asp:ScriptManager ID="ScriptManagerRAMS" runat="server" ScriptMode="Release" >

I tried using the one below and get a error message Parser Error Message: Unknown server tag 'asp:ToolkitScriptManager'.

<%-- <asp:ToolkitScriptManager ID="tsm" runat="server">
--%>

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Jeet Gupta · Answer 1 · 2015-01-12T18:23:00

Solution 1

If your dropdown is in the update panel then the dropdown selectedIndex will not fire until you used Update panel trigger.
A sample code is attached. try to make it. if still have problem. post the code.

C#

<triggers> 
<asp:asyncpostbacktrigger controlid="DropDownList1" eventname="SelectedIndexChanged" xmlns:asp="#unknown" /> 
 
</triggers>

Use this trigger inside of your update panel Modal popup.

write your dropdownName in the control ID and then use the selectedIndex.

Posted 12-Jan-15 18:23pm

Jeet Gupta

Comments

Member 11227881 13-Jan-15 9:42am

I have this code within a MasterPage. There is Update panel around the everything. Within there is simply a panel around the dropdown links. I can see the label content but the only content that I see on the dropdown is the default selection. But, what is displayed is correct. When I try to may a change to the selection. I still get the default setting. I have attempted what you said. Again within the updated panel you have a grid that has a link that calls the popup and the popup in within simple a panel. This work before it was added to the masterpage.

Member 11227881 13-Jan-15 10:43am

<asp:UpdatePanel ID="UpdatePanel1" runat="server"> <contenttemplate> <asp:Panel ID="Panel1" runat="server"> <asp:DropDownList ID="DropDownList1" runat="server" AutoPostBack="true" OnSelectedIndexChanged="DropDownList1_SelectedIndexChanged"> <asp:ListItem>Red <asp:ListItem>Green <asp:ListItem>Blue <Triggers> <asp:AsyncPostBackTrigger ControlID="DropDownList1" EventName="SelectedIndexChanged" /> </Triggers>

Member 11227881 13-Jan-15 10:58am

The problem started when I added the code to a existing master page which has the following scriptmanager.

<asp:ScriptManager
ID="ScriptManagerRAMS"
runat="server"
ScriptMode="Release" >

Here are the steps
1. The modual popup is launch from the Grid linkEdit. The module popup is within a panel. The Grid is outside of the panel within the Update Panel that surrounds everything.

Step 2. I load the dropdown list within the Preload with a

if (!IsPostBack)
{
The dropdown are load here.
}

3. When the modal popup is visible the dropdown has the correct value. But when you set a watch you see the default value of {Please Select}. Then I attempt to select a different value and you see {Please Select}. You see the same thing within the OnSelectedIndexChanged.

I am using the following in the application that is working.
<%-- <asp:ToolkitScriptManager ID="tsm" runat="server">
--%>

The one with the masterpage that is not working is using the following
<asp:ScriptManager ID="ScriptManagerRAMS" runat="server" ScriptMode="Release" >

I tried using the one below and get a error message Parser Error Message: Unknown server tag 'asp:ToolkitScriptManager'.

<%-- <asp:ToolkitScriptManager ID="tsm" runat="server">

Member 11227881 13-Jan-15 16:08pm

I am using the following in the application that is working.
<%-- <asp:ToolkitScriptManager ID="tsm" runat="server">
--%>

The one with the masterpage that is not working is using the following
<asp:ScriptManager ID="ScriptManagerRAMS" runat="server" ScriptMode="Release" >

I tried using the one below and get a error message Parser Error Message: Unknown server tag 'asp:ToolkitScriptManager'.

<%-- <asp:ToolkitScriptManager ID="tsm" runat="server">