problem in asp.net page control getting double

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i have a problem in asp.net when iam clicking the radiobuttion my controls on form are becoming double

XML

<form id="form1" runat="server">
    <asp:ScriptManager ID="sManager" runat="server"  />

    <div>
        <table>
            <asp:UpdatePanel ID="UPannel" runat="server" UpdateMode="Conditional">

                <ContentTemplate>
                    <tr>
                        <asp:Label ID="lbl" runat="server" Text="Add/Alter table"></asp:Label>
                    </tr>
                    <tr>
                            <table>
                                <tr>
                                        <asp:RadioButton ID="rdoAddTbl" runat="server" GroupName="Operation" Text="Add Table"
                                            AutoPostBack="true" OnCheckedChanged="RadioButton1_CheckedChanged" />
                                </tr>
                                <tr>
                                        <asp:RadioButton ID="rdoAddColumn" runat="server" GroupName="Operation" Text="Add Column"
                                            AutoPostBack="true" OnCheckedChanged="RadioButton1_CheckedChanged" />
                                </tr>
                                <tr>
                                        <asp:RadioButton ID="rdoDropColumn" runat="server" GroupName="Operation" Text="Drop Column"
                                            AutoPostBack="true" OnCheckedChanged="RadioButton1_CheckedChanged" />
                                </tr>
                            </table>

                        <td>
                            <asp:TextBox ID="txtSql" runat="server" TextMode="MultiLine" Height="300px" Width="290px"></asp:TextBox>
                        </td>
                    </tr>
                </ContentTemplate>
                <Triggers>
                    <asp:AsyncPostBackTrigger ControlID="rdoAddTbl" EventName="CheckedChanged" />
                    <asp:AsyncPostBackTrigger ControlID="rdoAddColumn" EventName="CheckedChanged" />
                    <asp:AsyncPostBackTrigger ControlID="rdoDropColumn" EventName="CheckedChanged" />
                </Triggers>
            </asp:UpdatePanel>
        </table>
    </div>
    </form>

Posted 29-Jan-14 0:51am

srilekhamenon

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Comments

King Fisher 29-Jan-14 6:53am

check your RadioButton1_CheckedChanged() event or post here

srilekhamenon 29-Jan-14 7:00am

protected void RadioButton1_CheckedChanged(object sender, EventArgs e)
{

switch (((RadioButton)sender).ID)
{
case "rdoAddTbl":
txtSql.Text = "Create Table TEST_TABLENAME ([ID] INTEGER PRIMARY KEY IDENTITY)\n\n";
break;
case "rdoAddColumn":
txtSql.Text = "Alter table TEST_TABLENAME Add Firstname varChar(255)\n";
break;
case "rdoDropColumn":
txtSql.Text = "Alter Table TEST_TABLENAME DROP COLUMN Firstname\n\n";
break;
}

}

Tadit Dash (ତଡିତ୍ କୁମାର ଦାଶ) 29-Jan-14 7:15am

This should not happen. Please debug and see what is happening.

1 solution

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Kornfeld Eliyahu Peter · Answer 1 · 2014-01-29T01:18:00

You markup is a mess, with wrong nesting and all - that what confuses the update panel.
Remove all the table stuff - and abracadabra it works...
Use divs with CSS to layout and not table!!!

HTML

<form id="form1" runat="server">
    <asp:ScriptManager ID="sManager" runat="server" />

    <div>
        <asp:UpdatePanel ID="UPannel" runat="server" UpdateMode="Conditional">
            <ContentTemplate>
                <asp:Label ID="lbl" runat="server" Text="Add/Alter table"></asp:Label>
                <asp:RadioButton ID="rdoAddTbl" runat="server" GroupName="Operation" Text="Add Table" AutoPostBack="true" OnCheckedChanged="RadioButton1_CheckedChanged" />
                <asp:RadioButton ID="rdoAddColumn" runat="server" GroupName="Operation" Text="Add Column" AutoPostBack="true" OnCheckedChanged="RadioButton1_CheckedChanged" />
                <asp:RadioButton ID="rdoDropColumn" runat="server" GroupName="Operation" Text="Drop Column" AutoPostBack="true" OnCheckedChanged="RadioButton1_CheckedChanged" />

                <asp:TextBox ID="txtSql" runat="server" TextMode="MultiLine" Height="300px" Width="290px"></asp:TextBox>
            </ContentTemplate>
            <Triggers>
                <asp:AsyncPostBackTrigger ControlID="rdoAddTbl" EventName="CheckedChanged" />
                <asp:AsyncPostBackTrigger ControlID="rdoAddColumn" EventName="CheckedChanged" />
                <asp:AsyncPostBackTrigger ControlID="rdoDropColumn" EventName="CheckedChanged" />
            </Triggers>
        </asp:UpdatePanel>
    </div>
</form>