索引超出了数组界限,急！！！！！
int num=0;
foreach (DataGridViewRow dgvRow in dgvCharge.Rows)
  {
  if (dgvRow.Cells["dgvcbc"] != null && dgvRow.Cells["dgvcbc"].Value != null)
  if (dgvRow.Cells["dgvcbc"].Value.Equals(true))
  {
  ------------------------下一行报错
  PayInfo.ComputeChargeRecordID[num] = Convert.ToInt32(dgvRow.Cells["colChargeID"].Value);
   
  decimal remainMoney = Convert.ToDecimal(dgvRow.Cells["colRemainMoney"].Value);
  decimal remainWater = Convert.ToDecimal(dgvRow.Cells["colRemainWater"].Value);

  DataSet ds = bll.GetChargeDetailInfo(PayInfo.ComputeChargeRecordID[num]);
  decimal recMoney = 0;
  decimal factMoney = 0;
   
  decimal recLateFee = 0;
  decimal discountMoney = 0;
  decimal cutLateFee = 0;
  decimal factualLateFee = 0;
  PayInfo.FactualMoney[num] = Convert.ToDouble(factMoney);
  PayInfo.PayWaterMuch[num] = Convert.ToDouble(remainWater * factMoney / remainMoney);
  PayInfo.ReceivableMoney[num] = PayInfo.FactualMoney[num];
  PayInfo.ReceivableWater[num] = PayInfo.PayWaterMuch[num];
  PayInfo.ReceivableLateFee[num] = Convert.ToDouble(recLateFee);
  PayInfo.ChargeDiscount[num] = Convert.ToDouble(discountMoney);
  PayInfo.LateFeeDiscount[num] = Convert.ToDouble(cutLateFee);
  PayInfo.FactualLateFee[num] = Convert.ToDouble(factualLateFee);
  PayInfo.PlanInWater[num] = Convert.ToDouble(dgvRow.Cells["PlanInWater"].Value.ToString());
  PayInfo.PlanInMoney[num] = Convert.ToDouble(dgvRow.Cells["PlanInMoney"].Value.ToString());
  PayInfo.PlanOutWater[num] = Convert.ToDouble(dgvRow.Cells["PlanOutWater"].Value.ToString());
  PayInfo.PlanOutMoney[num] = Convert.ToDouble(dgvRow.Cells["PlanOutMoney"].Value.ToString());
  num++;
  }
  }
}

为什么？？？

------解决方案--------------------
if (dgvRow.Cells["dgvcbc"] != null && dgvRow.Cells["dgvcbc"].Value != null) 


------------>


if (dgvRow.Cells["dgvcbc"] != null && dgvRow.Cells["dgvcbc"].Value != null && dgvRow.Cells.Count>0) 

------解决方案--------------------
if (dgvRow.Cells["dgvcbc"] != null && dgvRow.Cells["dgvcbc"].Value != null && dgvRow.Cells.Count>0)