Not able to fire Linkbutton click event added dynamically in asp.net?

Mangesh barmate

14y5.6k.NET

I have bound fields columns to gridview and added linkbutton at runtime.When i click to linkbutton Page load happen but Linkbutton event not invoked.
Below are my code sample.
           Runat="server"
          AutoGenerateColumns="False" DataKeyNames="Store"
          BorderWidth="1px" BackColor="LightGoldenrodYellow"
          GridLines="None" CellPadding="2" BorderColor="Tan"
          ForeColor="Black">

                          HorizontalAlign="Center" BackColor="PaleGoldenrod">

                          BackColor="Tan">
                          BackColor="PaleGoldenrod">



                  InsertVisible="False" DataField="Store"
                    SortExpression="Store">



                            BackColor="DarkSlateBlue">

Below my Code-
protected override void OnInit(EventArgs e)
        {
            base.OnInit(e);
            AddLinkButton();
        }
        protected void StoresGridView_DataBound(object sender, EventArgs e)
        {
            AddLinkButton();
        }
        ///

        /// Add a LinkButton To GridView Row.
        ///

        private void AddLinkButton()
        {
            foreach (GridViewRow row in StoresGridView.Rows)
            {
                if (row.RowType == DataControlRowType.DataRow)
                {
                    LinkButton lb = new LinkButton();
                    lb.ID = "lnk";
                    lb.Text=row.Cells[0].Text;
                    lb.CommandName = "StoreDetail";
                    lb.Command += lnk_Command;
                    row.Cells[0].Controls.Add(lb);
                }
            }
        }
Here i am expecting linkbutton should invoked
     protected void lnk_Command(object sender, CommandEventArgs e)        {
            if (e.CommandName == "StoreDetail")
            {
                //This is to test
                Response.Write("You Press Link Button!");
            }
        }
Is anyone Know about this ? or any suggestion on the same.

3 Replies
Know the answer? Post it — somebody with the same question will find it here.

Shivanand Arur14y ago
Hey this is just for reference... This is the code I wrote to create buttons dynamically it in my page and add it in my panel.. It may not fit to your requirement.. I am just sharing this code to show how to generate Buttons Dynamically. My main aim in my project was to create buttons dynamically and add it in the page.

The above answer I have written may be correct, since it calls the Link Button Click Event.
Try to refer your requirement with this code... Hope it may help you out.....

protected void ShowImageButton()
{
try
{
con = new SqlConnection(connectionString);
con.Open();
cmd = new SqlCommand("Select BrandID, BrandImg, BrandName from CCSBrands where BrandActive = 1 ORDER BY BrandName", con);
dr = cmd.ExecuteReader();
int val = GetBrandCount();

Button[] myButton = new Button[val];

if (dr.HasRows)
{
for (int i = 0; i < val; i++)
{
myButton[i] = new Button();
}

int count = 0;
while (count < val)
{
while (dr.Read())
{
myButton[count].Width = 150;
myButton[count].Height = 150;
myButton[count].BorderColor = Color.Black;
myButton[count].BorderWidth = 1;
myButton[count].ID = dr["BrandID"].ToString();
myButton[count].CssClass = "BrandImage";
myButton[count].Style.Add("Cursor", "pointer");
myButton[count].Style.Add("width", "150");
myButton[count].Style.Add("height", "150");
myButton[count].Style.Add("padding-top", "7px");
myButton[count].Style.Add("margin-top", "7px");
myButton[count].Style.Add("background-repeat", "no-repeat");
myButton[count].ToolTip = dr["BrandName"].ToString();
myButton[count].Style.Add("background-image", dr["BrandImg"].ToString());

pnlBrandData.Controls.Add(myButton[count]);
pnlBrandData.Controls.Add(new LiteralControl("   "));
myButton[count].Click += new EventHandler(BrandButton_Click);
count++;
}
}
}
        }
+1
Shivanand Arur14y ago
Try adding this in your If Condition...
lb.Click += new EventHandler(lnk_Command);

           if (row.RowType == DataControlRowType.DataRow)
                {
                    LinkButton lb = new LinkButton();
                    lb.ID = "lnk";
                    lb.Text=row.Cells[0].Text;
                    lb.CommandName = "StoreDetail";
          lb.Click += new EventHandler(lnk_Command);
                    row.Cells[0].Controls.Add(lb);
                }

PLEASE MARK THE ANSWER AS ACCEPTED IF IT HELPED YOU!!!
+1
Nitesh Kejriwal14y ago
I think the AddLinkButotn() needs some modifications. Why are you adding a linkbutton to every record when you are calling this method in DataBound().

Try the below code and see if it works.

private void AddLinkButton()
        {

                if (row.RowType == DataControlRowType.DataRow)
                {
                    LinkButton lb = new LinkButton();
                    lb.ID = "lnk";
                    lb.Text=row.Cells[0].Text;
                    lb.CommandName = "StoreDetail";
                    lb.Command += lnk_Command;
                    row.Cells[0].Controls.Add(lb);
                }
        }
+1