public string sortColName()
{
int idx = this.iSortCol_0;
if (idx == 0) return this.mDataProp_0;
if (idx == 1) return this.mDataProp_1;
if (idx == 2) return this.mDataProp_2;
if (idx == 3) return this.mDataProp_3;
if (idx == 4) return this.mDataProp_4;
if (idx == 5) return this.mDataProp_5;
if (idx == 6) return this.mDataProp_6;
if (idx == 7) return this.mDataProp_7;
if (idx == 8) return this.mDataProp_8;
if (idx == 9) return this.mDataProp_9;
if (idx == 10) return this.mDataProp_10;
if (idx == 11) return this.mDataProp_11;
if (idx == 12) return this.mDataProp_12;
if (idx == 13) return this.mDataProp_13;
if (idx == 14) return this.mDataProp_14;
if (idx == 15) return this.mDataProp_15;
return null;
}