OnDoc/Client/Klassen/clsPartner.cs

using Syncfusion.WinForms.DataGrid.Interactivity;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Runtime.CompilerServices;
using System.Text;
using System.Threading.Tasks;
using System.Data;
using Syncfusion.Styles;
using Syncfusion.Windows.Forms.Tools;
using Database;
using System.Collections;

namespace OnDoc.Klassen
{
    public static class clsPartner
    {
        private static string Connectionstring = "";
        public static DataTable partnerliste;
        public static string tableleyout { get; set; } = "";
        public static void set_connectionstring(string connectionstring)
        {
            Connectionstring = connectionstring;
        }

        public static DataTable search_partner(string query, int anzahl, int fnkt, bool personendokument, bool bpdokument, bool saldiert)
        {
            DB db = new DB(Connectionstring);
            try
            {
                db.clear_parameter();
                db.add_parameter("@query", query);
                db.add_parameter("@table", "dbo.partner");
                db.add_parameter("@anz", anzahl.ToString());
                db.add_parameter("@fnkt", fnkt.ToString());
                partnerliste = db.Get_Tabledata("sp_partner_search", true, false);
                if (partnerliste.Rows.Count < 1) { return partnerliste; }

                string selectstring = "";
                if (saldiert == false)
                {
                    selectstring = " saldiert = false ";
                }
                if (!personendokument && !bpdokument)
                {
                    try { 
                        DataRow[] rowsToKeep = partnerliste.Select(selectstring);
                    DataTable tempDataTable = rowsToKeep.CopyToDataTable();
                    partnerliste.Clear();
                    partnerliste.Merge(tempDataTable);
                    tempDataTable.Dispose();
                }catch
            {
                        partnerliste.Rows.Clear();
                    }

                } else { selectstring = selectstring + " and "; }
                if (personendokument)
                {
                    try
                    {
                        DataRow[] rowsToKeep = partnerliste.Select(selectstring + "nrpar00 > 100000000");
                        DataTable tempDataTable = rowsToKeep.CopyToDataTable();
                        partnerliste.Clear();
                        partnerliste.Merge(tempDataTable);
                        tempDataTable.Dispose();
                    }
                    catch 
                    {
                        partnerliste.Rows.Clear();
                    }
                }
                if (bpdokument)
                {
                    try
                    {
                        DataRow[] rowsToKeep = partnerliste.Select(selectstring+  "nrpar00 < 100000000");
                        DataTable tempDataTable = rowsToKeep.CopyToDataTable();
                        partnerliste.Clear();
                        partnerliste.Merge(tempDataTable);
                        tempDataTable.Dispose();

                    }
                    catch
                    {
                        partnerliste.Rows.Clear();
                    }
                }

                //int i = 0;
                //foreach (DataColumn dc in partnerliste.Columns)
                //{
                //    dc.SetOrdinal(i);
                //    i++;
                //}
                //partnerliste.Columns.Add("Partnerart");
                //foreach (System.Data.DataRow row in partnerliste.Rows)
                //{
                //    if (Convert.ToInt32(row[0]) > 999999) { row["Partnerart"] = 2; } else { row["Partnerart"] = 1; }
                //}
                return partnerliste;
            }
            finally { db = null; }
        }

        public static DataTable partnerderperson(int partnernr, int fnkt)
        {
            string result = "";
            DB db = new DB(Connectionstring);
            db.clear_parameter();
            db.add_parameter("@query", partnernr.ToString());
            db.add_parameter("@table", "dbo.partner");
            db.add_parameter("@anz", "5");
            db.add_parameter("@fnkt", fnkt.ToString());
            partnerliste =  db.Get_Tabledata("sp_partner_search", true, false);
            return partnerliste;
            //if (db.dsdaten.Tables[0].Rows.Count > 0)
            //{
            //    result=db.dsdaten.Tables[0].Rows[0][0].ToString();
            //}
            //db = null;
            //return result;


        }
        public static DataTable get_partnerliste() { return partnerliste; }
    }
}