Null Object reference not set to an instance of an object

Question

            Invoiceget data = new Invoiceget();


            data.slno = DataGridView1.CurrentRow.Cells["Column1"].Value.ToString();

its showing the correct slno if i move mouse over data.slno
and mean time i am getting Null Object reference not set to an instance of an object

Jignesh Trivedi · Answer

hi As per me this error occurs when you trying to access null object's properties / methods / public attribute or converting null object into other type of object. here i think DataGridView1.CurrentRow.Cells[Column1].Value has null value and your are trying to call is Tostring Method. try... data.slno = Convert.Tostring(DataGridView1.CurrentRow.Cells[Column1].Value); hope this will help you.

suhas setty · Answer

i have library file there i intialised database add parameters now from application file i hv to update database

Iftikar Hussain · Answer

Hi Before assigning the value to your class object can you display the value like this var temp=DataGridView1.CurrentRow.Cells[Column1].Value; MessageBox.Show( temp ); Regards Iftikar