Gridviews InsertCommand

Question

Hello everyone,
I created a gridview binded via mysql, withount using codebehind.
It works fine, I can see the data, delete and even edit rows via Delete and Update command. But the InsertCommand does not work.
So I have a simple question: is this possible to do it this way or I have to work with code behind?
Here is part of my code:
        <Columns>
            <asp:TemplateField ShowHeader="False">
                <ItemTemplate>
                    <asp:ImageButton ID="Deletebutton" runat="server" ToolTip="Delete" CssClass="icon" CommandName="Delete"
ImageUrl="Images/Delete.png"/>
                    <asp:ImageButton ID="ImageButton1" runat="server" ToolTip="Edit" CssClass="icon" CommandName="Edit"
ImageUrl="~/Images/edit.png"/>
                </ItemTemplate>
                <EditItemTemplate>
                    <asp:ImageButton ID="imgbtnUpdate" runat="server" ToolTip="Save" CssClass="icon" ImageUrl="~/Images/Save.png"
CommandName="Update" />
                    <asp:ImageButton ID="imgbtnCancel" runat="server" ToolTip="Cancel" CssClass="icon" ImageUrl="~/Images/Cancel.png"
CommandName="Cancel"/>
                </EditItemTemplate>
                <FooterTemplate>
                    <asp:ImageButton ID="imgbtnInsert" runat="server" ToolTip="Add" CssClass="icon" ImageUrl="~/Images/Add.png"
CommandName="Insert"/>
                </FooterTemplate>
           </asp:TemplateField>
            <asp:BoundField DataField="TransactionCategoryId"   SortExpression="TransactionCategoryId"  HeaderText="Id"        
Visible="false" />
            <asp:BoundField DataField="TransactionCategory"     SortExpression="TransactionCategory"    HeaderText="Category" />
        </Columns>
    </asp:GridView>
    <asp:SqlDataSource
        ID="SqlDataSource1"
        runat="server"
        ConnectionString="server=localhost;user id=root;password=;database=mydbtest;Convert Zero Datetime=True;Allow Zero Datetime=True"
        ProviderName="<%$ ConnectionStrings:mytestConnectionString.ProviderName %>"
        SelectCommand="SELECT *
                        FROM `sytransactioncategory`
                        ORDER BY `TransactionCategory`"
        DeleteCommand="DELETE FROM `sytransactioncategory` WHERE TransactionCategoryId=@TransactionCategoryId"
        UpdateCommand="UPDATE `sytransactioncategory` SET TransactionCategory=@TransactionCategory WHERE TransactionCategoryId=@TransactionCategoryId"
        InsertCommand="INSERT INTO `sytransactioncategory` (TransactionCategory) VALUES(@TransactionCategory)" >

Answer 1

Below is my last code showing the footer fields that are supposed to insert.In the UpdateCommand, when I replace @TransactionCategory by @azerty and try to update, I logically have an error message.
But when I replace in the InsertCommand @TransactionCategory by @azerty and try to insert, I do not have an error message. It's like the command is not taken into account. I am running crazy...
    <asp:GridView ID="GvTrnCategory1" runat="server"
         AutoGenerateColumns="False"
        AllowSorting="True"
ShowFooter="true"
        EmptyDataText="No data found"
        DataSourceID="SqlDataSource1"
        DataKeyNames="TransactionCategoryId" >
        <Columns>
            <asp:TemplateField>
                <ItemTemplate>
                    <asp:ImageButton ID="Deletebutton" runat="server" ToolTip="Delete" CssClass="icon" ImageUrl="Images/Delete.png"
CommandName="Delete"/>
                    <asp:ImageButton ID="ImageButton1" runat="server" ToolTip="Edit" CssClass="icon" ImageUrl="~/Images/edit.png"
CommandName="Edit"/>
                </ItemTemplate>
                <EditItemTemplate>
                    <asp:ImageButton ID="imgbtnUpdate" runat="server" ToolTip="Save" CssClass="icon" ImageUrl="~/Images/Save.png"
CommandName="Update" />
                    <asp:ImageButton ID="imgbtnCancel" runat="server" ToolTip="Cancel" CssClass="icon" ImageUrl="~/Images/Cancel.png"
CommandName="Cancel"/>
                </EditItemTemplate>
                <FooterTemplate>
                    <asp:ImageButton ID="imgbtnInsert" runat="server" ToolTip="Add" CssClass="icon" ImageUrl="~/Images/Add.png"
CommandName="Insert"/>
                </FooterTemplate>
           </asp:TemplateField>
            <asp:TemplateField HeaderText="Id" SortExpression="TransactionCategoryId">
                <ItemTemplate>
                    <asp:Label ID="lblTransactionCategoryId" runat="server" Text='<%# Bind("TransactionCategoryId") %>'></asp:Label>
                </ItemTemplate>
                <EditItemTemplate>           
                    <asp:Label ID="lblEditTransactionCategoryId" runat="server" Text='<%# Bind("TransactionCategoryId") %>'></asp:Label>         
                </EditItemTemplate>
                <FooterTemplate>
                    <asp:TextBox ID="txtAddFlowId" runat="server" Text='<%# Bind("TransactionCategoryId") %>'></asp:TextBox>
                </FooterTemplate>
            </asp:TemplateField>
            <asp:TemplateField HeaderText="Transaction Category" SortExpression="TransactionCategory"  >
                <ItemTemplate>
                    <asp:Label ID="lblTransactionCategory" runat="server" Text='<%# Bind("TransactionCategory") %>'></asp:Label>
                </ItemTemplate>
                <EditItemTemplate>           
                    <asp:TextBox ID="txtEditTransactionCategory" runat="server" Text='<%# Bind("TransactionCategory") %>'></asp:TextBox>         
                </EditItemTemplate>
                <FooterTemplate>
                    <asp:TextBox ID="txtAddTransactionCategory" runat="server" Text='<%# Bind("TransactionCategory") %>'></asp:TextBox>
                </FooterTemplate>
            </asp:TemplateField>
        </Columns>
    </asp:GridView>
    <asp:SqlDataSource
        ID="SqlDataSource1"
        runat="server"
        ConnectionString="server=localhost;user id=root;password=;database=mydbtest;Convert Zero Datetime=True;Allow Zero Datetime=True"  
        ProviderName="<%$ ConnectionStrings:mytestConnectionString.ProviderName %>"
        SelectCommand="SELECT *
                        FROM `sytransactioncategory`
                        ORDER BY `TransactionCategory`"
        DeleteCommand="DELETE FROM `sytransactioncategory` WHERE TransactionCategoryId=@TransactionCategoryId"
        UpdateCommand="UPDATE `sytransactioncategory` SET TransactionCategory=@TransactionCategory WHERE TransactionCategoryId=@TransactionCategoryId"
InsertCommand="INSERT INTO `sytransactioncategory` (`TransactionCategory`) VALUES(@TransactionCategory)" >
    </asp:SqlDataSource>