how to insert data using dropdownlist in vb.net

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hi, i want to ask, how to insert selected data into sql server.
fyi, I'm use visual studio 2008
this my html code,

ASP.NET

<asp:TemplateField HeaderText="Add">
            <ItemTemplate>
                <%# Eval("TagAdd") %>
            </ItemTemplate>
            <FooterTemplate>
                <asp:DropDownList ID="TagAdd" runat="server" AutoPostBack="True"   
DataTextField="TagAdd" DataValueField="TagAdd">
                <asp:ListItem Value="0">Select Action</asp:ListItem>  
                <asp:ListItem Value="True">Enable</asp:ListItem>
                <asp:ListItem Value="False">Disable</asp:ListItem>
                </asp:DropDownList>
            </FooterTemplate>
        </asp:TemplateField>

and here the code behind

VB

Dim TagAdd As DropDownList = CType(control.FindControl("ddlTagAdd"), SelectedItem).Text

cmd.CommandText = "INSERT INTO [ModuleDetails](ModuleName, SubModule, TagAdd, TagEdit, TagDelete) VALUES(@ModuleName, @SubModule, @TagAdd, @TagEdit, @TagDelete)"

cmd.Parameters.AddWithValue("@TagAdd", TagAdd.SelectedItem)

however, the error shows that SelectedItem is not declared(at Dim line).

can you help me on how to declared dropdownlist?

Posted 7-Sep-15 14:58pm

Member 11966529

Updated 7-Sep-15 16:07pm

ChauhanAjay

v2

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Comments

ChauhanAjay 7-Sep-15 22:14pm

Change the following line from
<asp:DropDownList ID="TagAdd" runat="server" AutoPostBack="True"
DataTextField="TagAdd" DataValueField="TagAdd">
to
<asp:DropDownList ID="ddlTagAdd" runat="server" AutoPostBack="True"
DataTextField="TagAdd" DataValueField="TagAdd">

Member 11966529 7-Sep-15 22:22pm

i have change the code, it shows error at code behind. it says "Type 'SelectedItem' is not defined" and it refer to "Dim TagAdd As DropDownList = CType(control.FindControl("ddlTagAdd"), SelectedItem).Text" line.

ChauhanAjay 7-Sep-15 22:35pm

try using the below code
Dim TagAdd As DropDownList = CType(control.FindControl("ddlTagAdd"))
Dim x as String = TagAdd.SelectedValue.ToString();

Member 11966529 7-Sep-15 22:47pm

the above code shows
error "Name 'ddlTagAdd' is not declared" refer to line " Dim x As String = ddlTagAdd.SelectedValue.ToString()"

error "Name 'TagAdd' is not declared" refer to "cmd.Parameters.AddWithValue("@TagAdd", TagAdd.SelectedItem)"

error "Syntax error in cast operator; two arguments separated by comma are required." refer to "Dim TagAdd As DropDownList = CType(control.FindControl("ddlTagAdd"))"

ChauhanAjay 7-Sep-15 22:57pm

Dim x As String = CType(control.FindControl("ddlTagAdd"), DropDownList).SelectedValue.ToString();

Member 11966529 7-Sep-15 23:03pm

Is it possible if i change "x" to "TagAdd"?

I changed it like this
Dim TagAdd As String = CType(control.FindControl("ddlTagAdd"), DropDownList).SelectedValue.ToString

and the error shows "'SelectedValue' is not a member of 'String'." which refer to "cmd.Parameters.AddWithValue("@TagAdd", TagAdd.SelectedValue)"

ChauhanAjay 7-Sep-15 23:26pm

x is just a variable you can change it to whatever you want to.
Dim TagAdd As String = CType(control.FindControl("ddlTagAdd"), DropDownList).SelectedItem.Value

The above line should work

Member 11966529 7-Sep-15 23:55pm

It Works. I just need to change "cmd.Parameters.AddWithValue("@TagAdd", TagAdd.SelectedValue)" to "cmd.Parameters.AddWithValue("@TagAdd", TagAdd.ToString)"

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Member 11966529 · Accepted Answer · 2015-09-07T18:48:00

HTML code