Cell content double click not working Properly?

I have three datagridview in one form.In all three datagridview, i have a cell content double click event.But Unfortunetly two cell Content double click work correct but third one is not working correctly?How can i solve these problem?

Gridview One:

private void dgvAsk_CellDoubleClick(object sender, DataGridViewCellEventArgs e)

{

if (e.RowIndex >= 0)

{

//gets a collection that contains all the rows

DataGridViewRow row = this.dgvAsk.Rows[e.RowIndex];

//populate the textbox from specific value of the coordinates of column and row.

txtId.Text = row.Cells[0].Value.ToString();

txtQuestion.Text = row.Cells[1].Value.ToString();

cmbValueType.Text = row.Cells[2].Value.ToString();

chkIsrequired.Checked = row.Cells[3].Value.ToString()=="1"?true:false;

ntxtSeq.Text = row.Cells[4].Value.ToString();

txtPholder.Text = row.Cells[5].Value.ToString();

txtMinVal.Text= row.Cells[6].Value.ToString();

txtMaxVal.Text= row.Cells[7].Value.ToString();

txtMinLen.Text= row.Cells[8].Value.ToString();

txtMaxLen.Text= row.Cells[9].Value.ToString();

txtPattern.Text= row.Cells[10].Value.ToString();

cmbOptName.Text= row.Cells[11].Value.ToString();

cmbConName.Text= row.Cells[12].Value.ToString();

chkSeqValidate.Checked= row.Cells[13].Value.ToString()=="1"?true:false;

ntxtInd.Text= row.Cells[14].Value.ToString();

txtUrduText.Text = row.Cells[15].Value.ToString();

}

}

Gridview Two:

private void dgvAskCond_CellContentDoubleClick(object sender, DataGridViewCellEventArgs e)

{

if (e.RowIndex >= 0)

{

//gets a collection that contains all the rows

DataGridViewRow row = this.dgvAskCond.Rows[e.RowIndex];

//populate the textbox from specific value of the coordinates of column and row.

txtConID.Text = row.Cells[0].Value.ToString();

txtCondtionName.Text = row.Cells[1].Value.ToString();

cmbQuestions.Text = row.Cells[2].Value.ToString();

txtAnswer.Text = row.Cells[3].Value.ToString();

}

}

Gridview Three:

private void dgvAskOption_CellContentClick(object sender, DataGridViewCellEventArgs e)

{

if (e.RowIndex >= 0)

{

//gets a collection that contains all the rows

DataGridViewRow row = this.dgvAskOption.Rows[e.RowIndex];

//populate the textbox from specific value of the coordinates of column and row.

txtOptID.Text = row.Cells[0].Value.ToString();

txtCode.Text = row.Cells[1].Value.ToString();

txtTitle.Text = row.Cells[2].Value.ToString();

txtOptName.Text = row.Cells[3].Value.ToString();

}

}