如何使用C＃检查datagridview中的空和null单元格
问题描述：
我正在尝试检查datagridview单元格的空值和空值...但我不能这样做...
i am trying to check the datagridview cells for empty and null value... but i can not do it right...
for (int i = 0; i < dataGridView1.Rows.Count; i++)
{
if ((String)dataGridView1.Rows[i].Cells[3].Value == String.Empty)
{
MessageBox.Show(" cell is empty");
return;
}
if ((String)dataGridView1.Rows[i].Cells[3].Value == "")
{
MessageBox.Show("cell in empty");
return ;
}
}
我甚至试过这个代码
if (String.IsNullOrEmpty(dataGridView1.Rows[i].Cells[3].Value))
{
MessageBox.Show("cell is empty");
return;
}
可以帮助我..这个...
can any one help me.. with this...
答
我会尝试这样：
foreach (DataGridViewRow rw in this.dataGridView1.Rows)
{
for (int i = 0; i < rw.Cells.Count; i++)
{
if (rw.Cells[i].Value == null || rw.Cells[i].Value == DBNull.Value || String.IsNullOrWhiteSpace(rw.Cells[i].Value.ToString())
{
// here is your message box...
}
}
}