Multiple selection of rows is not working - Windows form App

Question

Hi
I have two problems in my app. Looks they are related to each others?

Firstly, multiple selection of rows is not working. Although the property has been set to true!

Secondly, I cannot delete even one row from the datagrid view by clicking on the command button deleteRow, while I can do that by calling same method using the context menu strip!

 

If I use the button to delete the selected rows in datagridviewm the following gives me always Zero

 

if (dataGrid1.SelectedRows.Count>0){}

 

So, how to delete/remove a single or multiple rows from the Datagridview? I am using windows form app and the datagrid is not binding to a db

 

 

 

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