How To Fire Click Event On Datagridview Items?...If I Click On Any Item It Must Fire A Code

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C#

private void dataGridView2_CellClick(object sender, DataGridViewCellEventArgs e)
        {
            //DataGridViewImageCell cell = (DataGridViewImageCell)dataGridView2.Rows[e.RowIndex].Cells[e.ColumnIndex];
            //if (dataGridView1.Columns[e.RowIndex].Name == "Sewagram express")

            //if ((DataTable)(dataGridView2.DataSource).Columns[e.RowIndex].RowName
              //       == "sewagram express")
            DataGridViewImageCell cell = (DataGridViewImageCell) dataGridView2.Rows[e.RowIndex].Cells[e.ColumnIndex];
            if (cell.Value=="sewagram express")
            {
                SqlCommand cm1 = new SqlCommand("select * from sewagram", con);
                DataTable dth = new DataTable();
                SqlDataAdapter da = new SqlDataAdapter(cm1);
                da.Fill(dth);
                dataGridView1.DataSource = dth;
            }
        }

Posted 22-Feb-14 4:06am

Abhinav Chaudhary

Updated 22-Feb-14 4:14am

Krunal Rohit

v2

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Krunal Rohit 22-Feb-14 10:14am

So what is happening ?
-KR

Abhinav Chaudhary 22-Feb-14 10:29am

sir,when i clicking on "sewagram express" in the datagridview it is not firing the code written in if statement..i have tried all but its not working...please do help.

CHill60 22-Feb-14 13:02pm

You've declared Cell as DataGridViewImageCell ... DataGridViewCell instead

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CHill60 · Accepted Answer · 2014-02-22T08:21:00

This is a little confusing as you are referencing dataGridView2 with the row and column numbers of where you have clicked in dataGridView1. So assuming you really meant to do that (and that both grids contain the same text "sewagram express"...

In your click event (which is firing ok by the sound of it) you have declared DataGridViewImageCell cell but you want to compare this to a string ... this doesn't sound right to me so I changed that to

DataGridViewCell cell = (DataGridViewCell)dataGridView2.Rows[e.RowIndex].Cells[e.ColumnIndex];

The next problem I hit is with

if (cell.Value=="sewagram express")<br />

which throws the warning

Quote:
Warning 1 Possible unintended reference comparison; to get a value comparison, cast the left hand side to type 'string' C:\Users\C_2\AppData\Local\Temporary Projects\WindowsFormsApplication1\Form1.cs 34 17 WindowsFormsApplication1

so I changed that to

if (cell.Value.ToString() == "sewagram express")

and the code ran as expected. This last step wasn't strictly necessary because if you type ? cell.Value.GetType() into the Immediate window you'll find that it is actually a string, but I really don't like leaving Warnings in my code.

I found all of this out by putting a breakpoint in the event and stepped through it taking careful note of what was appearing in my Errors, Output and Locals windows.