private void TradeLog_Load_1(object sender, EventArgs e) { sqlDataAdapter1.Fill(dataSet11); decimal allwin; decimal win = 0; decimal self; for (int i = 0; i < DgvLog.Rows.Count; i++) { self = (decimal)DgvLog.Rows[i].Cells["selfPriceDataGridViewTextBoxColumn"].Value; win += self; } allwin = sum - win; label7.Text = win.ToString(); }
Try Convert.ToDecimal(DgvLog.Rows[i].Cells["selfPriceDataGridViewTextBoxColumn"].Value);
Convert.ToDecimal(DgvLog.Rows[i].Cells["selfPriceDataGridViewTextBoxColumn"].Value);
var
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