Change color in dataGridView cell

Question

I want to change the ForeColor in the cell when the text is not in the correct format, I have this code to change the color after the text is entered - is this the right way?

private void dataGridView1_DataError(object sender, DataGridViewDataErrorEventArgs e)
{
     dataGridView1.Rows[e.RowIndex].Cells[e.ColumnIndex].Style.ForeColor = Color.Red;
}

And how can I change it back after the user enters text in the correct format?

Answer 1

您可以在CellValidated事件处理程序中将颜色设置回正常。

Answer 2

Or better use dgv_CellValidating event. If the value is not the one you want, call the code you have up there. And there you must have anoher event (dgv_CellEndEdit), where you set the ForeColor back to defualt one (so error will kinda dissapear).

Answer 3

your code seems to be correct, if you are getting the desired visual effect you should be good to go.

same way we can change the background color also..

dataGridView1.Rows[e.RowIndex].Cells[e.ColumnIndex].Style.BackColor = Color.Green;

Answer 4

dataGridView1.Rows[e.RowIndex].Cells[e.ColumnIndex].Style.BackColor = Color.Green;