DataGridView, DataSource and RowCount related query

[dan sh]

Couldn't think of a decent subject. sorry. If I add a DataGridView to a Form in constructor and create and set its datasource there itself. Now, I also check the rowcount in the constructor and it comes out as zero. Can someone explain the reason? Here[^] is the question that triggered mine.

50-50-90 rule: Anytime I have a 50-50 chance of getting something right, there's a 90% probability I'll get it wrong...!!

[Ben Fair]

I believe this is because the RowCount property is related to the rows visually represented by the DataGridView control. According to your steps, after the constructor has run you have a DataGridView control and a DataSource attached to it that is filled with data, but the DataGridView control hasn't done it's visual rendering yet. If you check the property after the DataGridView has been rendered and displayed at least one time, you should get the expected value. Try placing an event handler on the Form.Shown event and then put a break point in the handler and check the RowCount property.

Hold on a second here... Don't you think you might be putting the horse ahead of the cart?

[dan sh]

That is what I had in mind as well. Let us see if we get a confirmation. :)

50-50-90 rule: Anytime I have a 50-50 chance of getting something right, there's a 90% probability I'll get it wrong...!!