Asp.net onClick event with select field for gridview

Question

i have a gridview that i have created without datasource control and that has data from a database table and the gridview also has a link selection in one column. The select link is pointed to ActivityID (maybe it will be a problem?)

 <asp:GridView ID="gwActivity" runat="server" CssClass="gwActivity" AutoGenerateColumns="false" OnSelectedIndexChanged="gwActivity_SelectedIndexChanged">
    <Columns>
        <asp:TemplateField>
            <ItemTemplate>
                <asp:LinkButton ID="lnkSelect" Text="Select" runat="server" CommandArgument='<%# Eval("ActivityID") %>' OnClick="lnkSelect_Click">
                </asp:LinkButton>
            </ItemTemplate>
        </asp:TemplateField>
        <asp:BoundField DataField="ActivityID" HeaderText="ActivitID" />
        <asp:BoundField DataField="Activity" HeaderText="Activit" />
        <asp:BoundField DataField="ActivityRegisteredDate" HeaderText="ActivityRegisteredDate" />
        <asp:BoundField DataField="Responsible" HeaderText="Responsible" />
        <asp:BoundField DataField="Category" HeaderText="Category" />
        <asp:BoundField DataField="Change_Requestor" HeaderText="Change_Requestor" />
        <asp:BoundField DataField="Priority" HeaderText="Priority" />
        <asp:BoundField DataField="Size" HeaderText="Size" />
        <asp:BoundField DataField="Status" HeaderText="Status" />
        <asp:BoundField DataField="System" HeaderText="System" />
        <asp:BoundField DataField="Comment" HeaderText="Comment" />
    </Columns>
</asp:GridView>

I have created a OnClick event.

protected void lnkSelect_Click(object sender, EventArgs e)
{
    txtActivity.Text = GridView1.SelectedRow.Cells[2].Text;
    ddlChange_Requestor.selectedvalue = GridView1.SelectedRow.Cells[6].selectevvalue;
}

i´m i missing something? should i maybe "FindControl".. Im a bit lost here?

e.g.

Activity textbox (txtActivity) = Test2 (it should say that in textbox)................................................... Change requestor dropdown (ddlChange_Requestor) = ... (find change request value and change dropdownlist)

VDWWD · Accepted Answer · 2018-03-21 22:50:34Z

1

You should switch to the GridView RowCommand.

<asp:GridView ID="gwActivity" runat="server" OnRowCommand="gwActivity_RowCommand">

And change the LinkButton to

<asp:LinkButton ID="lnkSelect" runat="server" CommandArgument='<%# Eval("ActivityID") %>'>Select</asp:LinkButton>

Now you can get all the data you need in the method.

protected void gwActivity_RowCommand(object sender, GridViewCommandEventArgs e)
{
    GridViewRow row = (GridViewRow)(((LinkButton)e.CommandSource).NamingContainer);

    txtActivity.Text = row.Cells[2].Text;
    ddlChange_Requestor.SelectedValue = e.CommandArgument.ToString();
}

answered Mar 21, 2018 at 22:50

VDWWD

35.7k23 gold badges67 silver badges87 bronze badges

Sign up to request clarification or add additional context in comments.

3 Comments

Nils Over a year ago

Hi, Thank you this almost works. I got it to work for the textbox but not for the dropdownlist? should i not say ddlChange_Requestor.SelectedValue = what row/column in the gridview to use?

VDWWD Over a year ago

Check the values in the DDL. The CommandArgument of the LinkButton in the GridView should be one of those values.

Nils Over a year ago

I got it to work: ddlchange_requestor.SelectedValue = row.Cells[6].Text;

user9525052 · Accepted Answer · 2018-03-21 23:12:18Z

0

If you're just copying data from your datagrid row to the input fields, then what you're trying to do incurs a heavy execution cost. Handling the LinkButton OnClick event on the server side requires that the page be posted back, all the page events to fire (e.g. events to bind data to the template, execute the LinkButton OnClick event, and render the entire page into HTML), and the resulting HTML to be sent back to the browser for display.

If you can use javascript, you should consider using the OnClientClick event handler instead as this keeps you on the web page without posting back to the web server.

answered Mar 21, 2018 at 23:12

user9525052

965 bronze badges

Collectives™ on Stack Overflow

Asp.net onClick event with select field for gridview

2 Answers 2

3 Comments

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

3 Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Related