Loops

for

more details

for (int icount = 2; icount <= 20; ivalue++) 
{ 
} 

foreach

more details

foreach (System.Windows.Forms.DataGridViewRow oRow in oDataGridView.Rows) 
{ 
} 

while

Testing for the condition at the top more details

while (inumber < 5) 
{ 
} 

do - while

Testing for the condition at the bottom more details

do 
{ 
} while (inumber < 5);