TextBox Example Into Datagridview

[maheshwag]

I have simple textbox example as below:

        private void Form1_Load(object sender, EventArgs e)
        {
            textBox1.Text = "Apple";
        }
 
        private void textBox1_TextChanged(object sender, EventArgs e)
        {
            if (textBox1.Text.Length == 1) 
            {
                if (textBox1.Text == "B" || textBox1.Text == "b") 
                {
                    textBox1.Text = "Ball";
                }
            }
        }
 
 

By default textbox1 should return "Apple" on Form load but when I press "b" or "B" then it should return "Ball" on textbox1. I have a confusion on utilize it into datagridview. how can i do it in datagridview?.

Suppose I have One column on datagridview like below:

 
private void Form1_Load(object sender, EventArgs e)
        {
            DataGridViewColumn Particulars = new DataGridViewTextBoxColumn();
            dataGridView1.Columns.Insert(0, Particulars );
 
 

If I have above column In datagridview1 than How to do I with datagridview1 which I have did with textbox?.

[Leito]

You could try to process your cell text when it is changed :

private void dataGridView_CellValidating(object sender, DataGridViewCellCancelEventArgs e) {
    if (dataGridView.CurrentCell.Value.ToString() == "B") {
         dataGridView.CurrentCell.Value = "Ball";
     }
}

N.B: Not sure that works, I wrote that without testing. But I think this is the good solution.

[maheshwag]

Leito, Sorry It's a not solution of my problem it's throw Error on Runtime Like "Null reference". Look at my Solution

[maheshwag]

This is a perfect solution of my problem:

  private void dataGridView1_EditingControlShowing(object sender, DataGridViewEditingControlShowingEventArgs e)
        {
            int i = dataGridView1.CurrentCell.RowIndex;
            if (this.dataGridView1.CurrentCell.ColumnIndex == 0)
            {
                if (e.Control is TextBox)
                {
                    TextBox dgvEditBox = e.Control as TextBox;
                    dgvEditBox.TextChanged += new EventHandler(dgvEditBox_TextChanged);
 
                }
 
            }
 
 
        }
 
 
        private void dgvEditBox_TextChanged(object sender, EventArgs e)
        {
            //Extract the textbox control
            TextBox dgvEditBox = (TextBox)sender;
 
            //Insert the appropriate string
            if (dgvEditBox.Text.Length == 1)
            {
                if (dgvEditBox.Text == "B" || dgvEditBox.Text == "b")
                {
                    dgvEditBox.Text = "Ball";
                }
 
 
            }
 
            //Here I Revoke the access of EventHandler for prevent others columns to produce same result.Otherwise other columns would return the same result which column "[0]" return. 
            dgvEditBox.TextChanged -= new EventHandler(dgvEditBox_TextChanged);
 
        }