public override bool SetString(int nRow, int nCol, string value) { if (nRow >= 0 && nRow < mnRow) { if (!mhtRecordVec.ContainsKey(nRow)) { AddRow(nRow); } AFIDataList valueList = (AFIDataList)mhtRecordVec[nRow]; if (valueList.GetType(nCol) == AFIDataList.VARIANT_TYPE.VTYPE_STRING) { if (valueList.StringVal(nCol) != value) { AFCDataList oldValue = new AFCDataList(); oldValue.AddString(valueList.StringVal(nCol)); valueList.SetString(nCol, value); AFCDataList newValue = new AFCDataList(); newValue.AddString(valueList.StringVal(nCol)); if (null != doHandleDel) { doHandleDel(mSelf, mstrRecordName, eRecordOptype.Updata, nRow, nCol, oldValue, newValue); } } } return(true); } return(false); }