ASP.NET Gridview Buttons

Question

I have a Gridview with 3 columns (CompanyName, Volume, counter) I would like to have the counter column be all buttons and when a user clicks the button it increments the counter by 1. I'm not sure how to properly setup the update command. Here is what I have so far:

<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" 
        DataSourceID="SqlDataSource1" 
        EmptyDataText="There are no data records to display.">
        <Columns>
            <asp:BoundField DataField="CompanyName" HeaderText="CompanyName" 
                SortExpression="CompanyName" />
            <asp:BoundField DataField="Volume" HeaderText="Volume" 
                SortExpression="Volume" />
            <asp:ButtonField DataTextField="counter" HeaderText="counter" 
            ButtonType="button"/>

        </Columns>
    </asp:GridView>
    <asp:SqlDataSource ID="SqlDataSource1" runat="server" 
        ConnectionString="<%$ ConnectionStrings:LiquorStoreConnectionString1 %>" 
        ProviderName="<%$ ConnectionStrings:LiquorStoreConnectionString1.ProviderName %>" 
        SelectCommand="SELECT [CompanyName], [Volume], [counter] FROM [Company]">
    </asp:SqlDataSource>

All I need it to do is increment by 1 every time the button is pressed on that specific row.

Answer 1

You can try this:

... UpdateCommand="Update COMPANY SET counter=@Counter +1 WHERE CopmanyName=@Company"
<columns> 
    <asp:BoundField HeaderText="counter" DataField="Counter" />             
</columns>

Make sure you have the bound field names correct. I haven't tested to see if this + 1 works with a bound field. If it does not, then we'll have to use OnRowCommand to update the database manually, then you can re-bind the view and see updated counter. More importantly, I don't see a nice primary key for your Company so you can do the update... So my sample is using the CompanyName, and that is danger danger.

Answer 2

do you want to update the database? You can catch the button click event in gridview row command . Take a look at link given below http://msdn.microsoft.com/en-us/library/bb907626.aspx