TabContainer cannot have children of type 'System.Web.UI.UpdatePanel'.
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hi iam using asp.net with c# in my client form iam using tabcontainer control with update pannel in tab container iam having dropdownlist ,onsectedindex changed event i have to visble and unvisble the text box control for that iam getting erroe can you correct my code
<cc1:TabContainer ID="infotab" runat="server" ActiveTabIndex="1" >
<cc1:TabPanel ID="TabBranchpanel" runat="server">
<HeaderTemplate> معلومات الفرع</HeaderTemplate>
<ContentTemplate>
<fieldset><legend> معلومات الفرع</legend>
<table><tr><td>العقد رقم:</td><td><asp:TextBox ID="txtcontractno" runat="server" TabIndex="15"></asp:TextBox></td><td><asp:RequiredFieldValidator ID="reqcontractno" runat="server" ControlToValidate="txtcontractno" ErrorMessage="عقد لا يمكن لا يكون فارغا">*</asp:RequiredFieldValidator><cc1:ValidatorCalloutExtender ID="cccontractno" runat="server" TargetControlID="reqcontractno" Enabled="True" ></cc1:ValidatorCalloutExtender><cc1:TextBoxWatermarkExtender ID="wwcontractno" runat="server" TargetControlID="txtcontractno" WatermarkText="أدخل رقم العقد" Enabled="True" WatermarkCssClass="textcss"></cc1:TextBoxWatermarkExtender></td><td style="width: 103px; height: 38px;">منطقة:</td><td style="height: 38px"><asp:DropDownList ID="ddlRegions" runat="server"><asp:ListItem Value="Central">مركزي</asp:ListItem>
<asp:ListItem Value="Western">الغربي</asp:ListItem>
<asp:ListItem Value="Eastern">الشرقية</asp:ListItem>
<asp:ListItem Value="Northern">شمالي</asp:ListItem>
<asp:ListItem Value="Southern">جنوبي</asp:ListItem>
</asp:DropDownList></td></tr>
<tr><td style="width: 103px; height: 12px;">مدينة:</td><td style="height: 12px"><asp:TextBox ID="txtcity" runat="server" TabIndex="5"></asp:TextBox></td><td style="height: 12px"><cc1:TextBoxWatermarkExtender ID="wwcity" runat="server" TargetControlID="txtcity" WatermarkText="أدخل مدينة" Enabled="True" WatermarkCssClass="textcss"></cc1:TextBoxWatermarkExtender></td><td style="width: 103px">منطقة:</td><td><asp:TextBox ID="txtarea" runat="server" TabIndex="6"></asp:TextBox></td><td><cc1:TextBoxWatermark -
hi iam using asp.net with c# in my client form iam using tabcontainer control with update pannel in tab container iam having dropdownlist ,onsectedindex changed event i have to visble and unvisble the text box control for that iam getting erroe can you correct my code
<cc1:TabContainer ID="infotab" runat="server" ActiveTabIndex="1" >
<cc1:TabPanel ID="TabBranchpanel" runat="server">
<HeaderTemplate> معلومات الفرع</HeaderTemplate>
<ContentTemplate>
<fieldset><legend> معلومات الفرع</legend>
<table><tr><td>العقد رقم:</td><td><asp:TextBox ID="txtcontractno" runat="server" TabIndex="15"></asp:TextBox></td><td><asp:RequiredFieldValidator ID="reqcontractno" runat="server" ControlToValidate="txtcontractno" ErrorMessage="عقد لا يمكن لا يكون فارغا">*</asp:RequiredFieldValidator><cc1:ValidatorCalloutExtender ID="cccontractno" runat="server" TargetControlID="reqcontractno" Enabled="True" ></cc1:ValidatorCalloutExtender><cc1:TextBoxWatermarkExtender ID="wwcontractno" runat="server" TargetControlID="txtcontractno" WatermarkText="أدخل رقم العقد" Enabled="True" WatermarkCssClass="textcss"></cc1:TextBoxWatermarkExtender></td><td style="width: 103px; height: 38px;">منطقة:</td><td style="height: 38px"><asp:DropDownList ID="ddlRegions" runat="server"><asp:ListItem Value="Central">مركزي</asp:ListItem>
<asp:ListItem Value="Western">الغربي</asp:ListItem>
<asp:ListItem Value="Eastern">الشرقية</asp:ListItem>
<asp:ListItem Value="Northern">شمالي</asp:ListItem>
<asp:ListItem Value="Southern">جنوبي</asp:ListItem>
</asp:DropDownList></td></tr>
<tr><td style="width: 103px; height: 12px;">مدينة:</td><td style="height: 12px"><asp:TextBox ID="txtcity" runat="server" TabIndex="5"></asp:TextBox></td><td style="height: 12px"><cc1:TextBoxWatermarkExtender ID="wwcity" runat="server" TargetControlID="txtcity" WatermarkText="أدخل مدينة" Enabled="True" WatermarkCssClass="textcss"></cc1:TextBoxWatermarkExtender></td><td style="width: 103px">منطقة:</td><td><asp:TextBox ID="txtarea" runat="server" TabIndex="6"></asp:TextBox></td><td><cc1:TextBoxWatermarkCan you specify the exception that you are getting?
Regards, Jamil