I am getting error. I like to show message dialog if cell is empty after click a button
var name = dataGridView1.Rows[0].Cells[1].Value != null ? dataGridView1.Rows[0].Cells[1].Value.ToString() : MessageBox.Show("Cell is empty") ;
You can't do it like that.Because the documentation says:
Either the type of first_expression and second_expression must be the same , or an implicit conversion must exist from one type to the other.
Use an if
statement instead:
string name;
if(dataGridView1.Rows[0].Cells[1].Value == null)
{
MessageBox.Show("Cell is empty");
}
else
{
name = dataGridView1.Rows[0].Cells[1].Value.ToString();
}
Please do not ever do this, Selman22's answer should be the way to go.
But just for fun: (return value "OK", "Cancel" etc when Message Box is shown)
var name = dataGridView1.Rows[0].Cells[1].Value != null ? dataGridView1.Rows[0].Cells[1].Value.ToString() : new Func<string>(() => MessageBox.Show("Cell is empty").ToString())();
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.