/// <Summary>
/// Add the sequence number to the datatable
/// </Summary>
/// <Param name = "DT"> </param>
/// <Param name = "colxuhao"> </param>
Public static void dbdatatableaddxuhao (datatable DT, string colxuhao ){
For (INT I = 0; I <DT. Rows. Count; I ++ ){
DT. Rows [I] [colxuhao] = I + 1;
}
}
/// <Summary>
/// Add the total row at the end of the datatable. The last two parameters set the range of rows to be total. datatablesummulticol (DT, 3rd, 5) // The total rows are, 4, 5, and 6.
/// </Summary>
/// <Param name = "DT"> </param>
/// <Param name = "ncolheji"> Columns whose 'Total' fields need to be displayed </param>
/// <Param name = "nmincolheji"> Columns starting from the total </param>
/// <Param name = "nmaxcolheji"> end of the total column.-1 indicates all </param>
Public static datarow dbdatatablesumrowswithcolrange (datatable DT, int ncolheji, int nmincolheji, int nmaxcolheji ){
If (nmaxcolheji =-1) nmaxcolheji = DT. Columns. Count-1;
If (nmaxcolheji <nmincolheji) custerror ("total columns, the end column is larger than the start column! ");
Int [] IX = new int [nmaxcolheji-nmincolheji + 1];
For (INT I = 0; I <IX. length; I ++ ){
IX [I] = I + nmincolheji;
}
Return dbdatatablesumrowswithcollist (DT, ncolheji, IX );
// Int [] I = nmaxcolhe
}
/// <Summary>
/// Add the total row at the end of the datatable. The last parameter sets the columns to be aggregated. datatablesummulticol (DT, 1, {3rd, 8}) // The total rows are, 7, and 9.
/// </Summary>
/// <Param name = "DT"> </param>
/// <Param name = "ncolheji"> Columns whose 'Total' fields need to be displayed </param>
/// <Param name = "colsheji"> columns to be aggregated </param>
Public static datarow dbdatatablesumrowswithcollist (datatable DT, int ncolheji, int [] colsheji ){
Datarow DR = DT. newrow ();
Dr [ncolheji] = "Total ";
DT. Rows. Add (DR );
// Initialize the total Array
Decimal [] arrdec = new decimal [colsheji. Length];
For (INT I = 0; I <colsheji. length; I ++ ){
Arrdec [I] = decimal. zero;
}
// Total
For (INT I = 0; I <DT. Rows. Count-1; I ++ ){
For (Int J = 0; j <colsheji. length; j ++ ){
Int c = colsheji [J];
If (convert. isdbnull (Dt. Rows [I] [c]) continue;
Arrdec [J] + = tools. todec (Dt. Rows [I] [c] + "");
}
}
// Assign a value
For (INT I = 0; I <colsheji. length; I ++ ){
Int c = colsheji [I];
If (arrdec [I] = decimal. Zero) Dr [c] = dbnull. value;
Else Dr [c] = arrdec [I];
}
Return Dr;
}
/// <Summary>
/// Add the total row at the end of the datatable. The last parameter sets the columns to be total, tools. dbdatatablesumrowswithcollist (DT, "Car ID", new string [] {"personal output", "fuel-saving (yuan)", "ultra-oil (yuan )"});
/// </Summary>
/// <Param name = "DT"> </param>
/// <Param name = "ncolheji"> Columns whose 'Total' fields need to be displayed </param>
/// <Param name = "colsheji"> columns to be aggregated </param>
Public static datarow dbdatatablesumrowswithcollist (datatable DT, string scolheji, string [] colsheji ){
Datarow DR = DT. newrow ();
Dr [scolheji] = "Total ";
DT. Rows. Add (DR );
// Initialize the total Array
Decimal [] arrdec = new decimal [colsheji. Length];
For (INT I = 0; I <colsheji. length; I ++ ){
Arrdec [I] = decimal. zero;
}
// Total
For (INT I = 0; I <DT. Rows. Count-1; I ++ ){
For (Int J = 0; j <colsheji. length; j ++ ){
String cname = colsheji [J];
If (convert. isdbnull (Dt. Rows [I] [cname]) continue;
Arrdec [J] + = tools. todec (Dt. Rows [I] [cname] + "");
}
}
// Assign a value
For (INT I = 0; I <colsheji. length; I ++ ){
String cname = colsheji [I];
If (arrdec [I] = decimal. Zero) Dr [cname] = dbnull. value;
Else Dr [cname] = arrdec [I];
}
Return Dr;
}
/// <Summary>
/// Subtotal of categories with total rows,
/// </Summary>
/// <Param name = "DT"> </param>
/// <Param name = "ncolheji"> Columns whose 'Total' fields need to be displayed </param>
/// <Param name = "colsheji"> columns to be aggregated </param>
Public datarow dbdatatablesubsumrowswithcollist (datatable DT, string scolheji, string [] colsgroup, string [] colsheji ){
Datarow DR = DT. newrow ();
Dr [scolheji] = "Total ";
DT. Rows. Add (DR );
// Initialize the total Array
Decimal [] arrdec = new decimal [colsheji. Length];
For (INT I = 0; I <colsheji. length; I ++ ){
Arrdec [I] = decimal. zero;
}
// Total
For (INT I = 0; I <DT. Rows. Count-1; I ++ ){
For (Int J = 0; j <colsheji. length; j ++ ){
String cname = colsheji [J];
If (convert. isdbnull (Dt. Rows [I] [cname]) continue;
Arrdec [J] + = tools. todec (Dt. Rows [I] [cname] + "");
}
}
For (INT I = 0; I <colsheji. length; I ++ ){
String cname = colsheji [I];
If (arrdec [I] = decimal. Zero) Dr [cname] = dbnull. value;
Else Dr [cname] = arrdec [I];
}
If (Dt. Rows. Count <= 1) return Dr;
// Subtotal
String srate = "";
Int currsubsumcol = DT. Rows. Count-2;
Arraylist AR = new arraylist ();
For (INT I = DT. Rows. Count-2; I> = 0; I --){
String currrate = DT. Rows [I] ["Tax Rate (%)"] + "";
If (srate! = Currrate ){
If (I! = DT. Rows. Count-2 ){
Dr = DT. newrow ();
Dr [scolheji] = "subtotal ";
For (Int J = 0; j <colsheji. length; j ++ ){
String cname = colsheji [J];
If (arrdec [J] = decimal. Zero) Dr [cname] = dbnull. value;
Else Dr [cname] = arrdec [J];
}
DT. Rows. insertat (DR, currsubsumcol + 1 );
}
Currsubsumcol = I;
Srate = currrate;
For (Int J = 0; j <colsheji. length; j ++) {// return to zero
Arrdec [J] = decimal. zero;
}
}
For (Int J = 0; j <colsheji. length; j ++ ){
String cname = colsheji [J];
If (convert. isdbnull (Dt. Rows [I] [cname]) continue;
Arrdec [J] + = tools. todec (Dt. Rows [I] [cname] + "");
}
If (I = 0 ){
Dr = DT. newrow ();
Dr [scolheji] = "subtotal ";
For (Int J = 0; j <colsheji. length; j ++ ){
String cname = colsheji [J];
If (arrdec [J] = decimal. Zero) Dr [cname] = dbnull. value;
Else Dr [cname] = arrdec [J];
}
DT. Rows. insertat (DR, currsubsumcol + 1 );
}
}
Return Dr;
}
