我該如何計算總和。 dataGridView 列中的值？

Question

如何計算 integer 和存儲在 dataGridView 列中的浮點值的總和，單擊按鈕並將顯示存儲在文本框中？

Answer 1

int sum = 0;

foreach (DataGridViewRow row in dataGridView.Rows)
{
    //here 0 is the index of columns you want to get values from 
    // you can also use column name instead of index
    sum += (int) row.Cells[0].Value;
}

//for showing the user message box
MessageBox.Show("Sum of all the values is {0}", sum.ToString());