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04.17.2008 at 06:38AM PDT, ID: 23330768
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9.0

Problem with PostBack

Asked by smdevivo in .NET Framework 2.x, .Net Editors & IDEs

Tags:

I have a page/form (Page1) with a number of fields (text boxes, drop downs, etc.).  Currently all items Insert a record when Continue is selected and the "Success" of that action then redirects to Page2.  That's all been working fine.

I now want to add a drop down which, when an item is selected from the list, populates another drop down menu (on the same page) based on that selection.  I have this working fine on a stand-alone test page that does not insert a record.  But when I place these items into the page with the "Insert Record" action, it immediately performs the insert and moves to Page2.  I realize this is probably normal.

What I'm looking for is: How do I have a "PostBack to the same page" for the two drop downs to interact and do their things and then, when the Continue button is selected, do the "Insert record action and the associated Success URL"?

I have attached my code for review - it is the bottom two drop down menus in question.
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<form id="frmRoofSys01" name='frmRoofSys01' method='POST' action="" runat='server'>
 
<asp:DropDownList ID="RoofAccess" runat="server">
      <asp:ListItem value="No Selection Made">Select Roof Access</asp:ListItem>
      <asp:ListItem value="Ladder-On Site">Ladder-On Site</asp:ListItem>
      <asp:ListItem value="Ladder Required">Ladder Required</asp:ListItem>
      <asp:ListItem value="Roof Hatch">Roof Hatch</asp:ListItem>
      <asp:ListItem value="Other">Other</asp:ListItem>
</asp:DropDownList>
 
<asp:DropDownList ID="RoofSlope" runat="server">
      <asp:ListItem value="No Selection Made">Select Roof Slope</asp:ListItem>
      <asp:ListItem value="0">0"</asp:ListItem>
      <asp:ListItem value="1/8">1/8"</asp:ListItem>
      <asp:ListItem value="1/4">1/4"</asp:ListItem>
      <asp:ListItem value="1/2">1/2"</asp:ListItem>
      <asp:ListItem value="3/4">3/4"</asp:ListItem>
      <asp:ListItem value="1">1"</asp:ListItem>
      <asp:ListItem value="1-1/4">1-1/4"</asp:ListItem>
      <asp:ListItem value="1-1/2">1-1/2"</asp:ListItem>
      <asp:ListItem value="1-3/4">1-3/4"</asp:ListItem>
      <asp:ListItem value="2">2"</asp:ListItem>
      <asp:ListItem value=">2">>2"</asp:ListItem>
      </asp:DropDownList>
 
<asp:DropDownList ID="RoofDeckType" runat="server" AutoPostBack="true" >
        <asp:ListItem Value="No Selection Made" Selected="selected">Select Roof Deck Type </asp:ListItem>
        <asp:ListItem Value="Metal">Metal </asp:ListItem>
        <asp:ListItem Value="Wood Plank">Wood Plank </asp:ListItem>
        <asp:ListItem Value="Structural Concrete">Structural Concrete </asp:ListItem>
        <asp:ListItem Value="Plywood">Plywood </asp:ListItem>
        <asp:ListItem Value="Oriented Strand Board">Oriented Strand Board </asp:ListItem>
        <asp:ListItem Value="Gypsum">Gypsum </asp:ListItem>
        <asp:ListItem Value="Tectum">Tectum </asp:ListItem>
        <asp:ListItem Value="Light-Weight Insulating Concrete over Steel Deck">Light-Weight Insulating Concrete over Steel Deck</asp:ListItem>
        <asp:ListItem Value="Light-Weight Insulating Concrete over Concrete Deck">Light-Weight Insulating Concrete over Concrete Deck</asp:ListItem>
        <asp:ListItem Value="Other">Other </asp:ListItem>
        <asp:ListItem Value="N/A">N/A </asp:ListItem>
      </asp:DropDownList></td>
 
<asp:DropDownList ID="RoofDeckThickness" DataSource="<%# dsRoofDeckThickness.DefaultView %>" DataTextField="RoofDeckThickness" DataValueField="RoofDeckThickness" runat="server"></asp:DropDownList>
 
      <asp:Button ID="Continue" Text="Continue" runat="server" />
            
  <input type="hidden" name="MM_update" value="frmRoofSys01" />
</form>
[+][-]04.17.2008 at 06:42AM PDT, ID: 21376909

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[+][-]04.17.2008 at 07:41AM PDT, ID: 21377590

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[+][-]04.18.2008 at 08:03PM PDT, ID: 21390980

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About this solution

Zones: .NET Framework 2.x, .Net Editors & IDEs
Tags: ASP.NET VB
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Solution Provided By: sunilj20
Participating Experts: 3
Solution Grade: A
 
 
[+][-]05.12.2008 at 07:32PM PDT, ID: 21551882

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