C # dataset index No Value Solution

C # dataset index No Value SolutionReply

When datsset is bound to the datagrieview, when the dataset data is refreshed, the bug is often found: index 0 has no value or index (INT) X has no value indexoutofrangeexception.

I made an afternoon yesterday and found the cause of the bug:
When data exists in the dview, the first row is selected by default. When we clear the data in the dataset, NO content exists in the datagridview, but the datagrieview is still selecting the first row, so the index 0 has no value. If the second row is selected and the data in dataset is cleared, no value of Index 1 is returned.
Solution:
Before clearing the data of the dataset, deselect all rows in the datagridview.
[Code]
Foreach (datagridviewrow row in datagridview1.rows)
{
Row. Selected = false;
}

[/Code]