Search in DataGridView (without database or query binded)

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Good day;
I want to add row in blank DataGridView by DataTable, this adding should follow 1 rule(in pseudo code):
"IF item before added, update 'Number' cell by refrenced TextBox (DataGridView Cell's: FName, LName, Number) ELSE add new row".

But there are two problems:
1. First row could not be added by below code (no error).
(first row should be add by another button or default value)
2. Compare to find an existent row similar to the row being added, played only the first row of the DataGridView.

C#

dataGridView1.SelectionMode = DataGridViewSelectionMode.FullRowSelect;
foreach (DataGridViewRow row in dataGridView1.Rows)
{
    if ((row.Cells[1].Value.ToString().Equals(txt_Name.Text)) &&   (row.Cells[2].Value.ToString().Equals(txt_Family.Text)))
    {           
        row.Cells[3].Value = txt_Number.Text;
        dataGridView1.DataSource = dt;          
        break;
    }
    else
    {           
        dt.Rows.Add(txt_Code.Text, txt_Name.Text, txt_Family.Text, txt_Number.Text);
        dataGridView1.DataSource = dt;
        break;          
    }
}

Posted 29-Aug-15 2:35am

Hadi Muhammadi

Updated 29-Aug-15 6:29am

v2

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Hadi Muhammadi · Answer 1 · 2015-08-31T12:14:00

I was looking this:

C#

try
{
    for (int i = 0; i < dataGridView1.RowCount; i++)
    {
        if (dataGridView1.Rows[i].Cells[0].Value.ToString() == txt_FName.Text)
        {
            dataGridView1.Rows[i].Cells[2].Value = [any proccess] ; // Update Row
            return;
        }
    }
}
catch(Exception ex)
{
    MessageBox.Show(ex.Message);
}
dataGridView1.Rows.Add(txt_FName.Text, txt_LName.Text, txt_Number.Text); // New Row