CODEWITHSUNDEEP
c#asp.netwebforms
connersz
connersz

Reputation: 1213

How to call method from when a button in a gridview is pressed

I have a button within a gridview and when I click the button I need to get the text value of that button (which is different for each row).

Is there a gridview event that I can use so I can get the row of the button that was clicked in the code behind?

 <asp:GridView ID="gvResults" runat="server" Width="100%" AllowSorting="True" OnSorting="gvResults_Sorting" AutoGenerateColumns="False">
            <Columns>
                <asp:TemplateField HeaderText="Customer Type">
                    <ItemTemplate>
                        <asp:Button ID="Button1" runat="server" Text='<%# DataBinder.Eval(Container.DataItem, "CustType") %>' CommandName="Delete" />
<%--                        <a href="javascript:sendval('<%# DataBinder.Eval(Container.DataItem, "CustType") %>');"><%# DataBinder.Eval(Container.DataItem, "CustType") %></a>--%>
                    </ItemTemplate>
                </asp:TemplateField>

Upvotes: 0

Views: 7700

Answers (4)

sh1rts
sh1rts

Reputation: 1874

Where possible, don't use DataBinder.Eval as such expressions are late-bound using reflection, and will negatively affect performance: -

http://www.devcurry.com/2011/02/how-to-avoid-databindereval-in-aspnet.html

ASP .NET - What's going on behind an Eval()?

Upvotes: 0

Satpal
Satpal

Reputation: 133403

You can use RowCommand event of the GridView control.

protected void gvResults_RowCommand(object sender, 
  GridViewCommandEventArgs e)
{
      if (e.CommandName == "Delete")
      {
        // Retrieve the row index stored in the 
        // CommandArgument property.
        int index = Convert.ToInt32(e.CommandArgument);

        // Retrieve the row that contains the button 
        // from the Rows collection.
        GridViewRow row = gvResults.Rows[index];

        // Add your code here
      }
}

You can set CommandArgument like 

<asp:Button ID="Button1" 
    runat="server" 
    Text='<%# DataBinder.Eval(Container.DataItem, "CustType") %>' 
    CommandName="Delete"
    CommandArgument="<%# ((GridViewRow) Container).RowIndex %>"  />

Bind Event like

 <asp:GridView ID="gvResults" OnRowCommand="gvResults_RowCommand"

Upvotes: 4

ekad
ekad

Reputation: 14614

If your purpose is just getting the Text value of the clicked button, first add the click event handler so Button1_Click method will be executed when the button is clicked:

<asp:Button ID="Button1" runat="server" Text='<%# DataBinder.Eval(Container.DataItem, "CustType") %>' OnClick="Button1_Click" />

then get the Text value in Button1_Click method like this:

protected void Button1_Click(object sender, EventArgs e)
{
    // get the clicked button text value
    string buttonText = ((Button)sender).Text;
}

Upvotes: 0

lmt1608
lmt1608

Reputation: 84

Code is below:

In .aspx

<asp:GridView ID="GridView1" Width="100%" AutoGenerateSelectButton="false" runat="server" AllowPaging="true" OnSelectedIndexChanged="GridView1_SelectedIndexChanged" OnRowDataBound="GridView1_RowDataBound">
                        <Columns>
                            <asp:TemplateField HeaderText="Customer Type">
                                <ItemTemplate>
                                    <asp:Button runat="server" ID="button1" Text='<%#Eval("TenLop") %>' OnClick="Button1_Click" />
                                </ItemTemplate>

                            </asp:TemplateField>
                        </Columns>
                    </asp:GridView>

In code behide

 protected void Button1_Click(object sender, EventArgs e)
    {
        Button button = sender as Button;
        TextBox1.Text = button.Text;
    }

Hope this help.

Upvotes: 0

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