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266
CoreWebAPI1/Models/dbhelper.cs
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266
CoreWebAPI1/Models/dbhelper.cs
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using Microsoft.Extensions.Configuration;
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using System;
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using System.Collections.Generic;
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using System.ComponentModel;
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using System.Data;
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using System.Data.SqlClient;
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using System.IO;
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using System.Linq;
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using System.Reflection;
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using System.Text;
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using System.Threading.Tasks;
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namespace CoreWebAPI1.Models
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{
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public class dbhelper
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{
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//SqlConnection con;
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string connectionstring;
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public DataSet dsdaten = new DataSet();
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private SqlDataAdapter dadaten;
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public dbhelper()
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{
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var configuation = GetConfiguration();
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connectionstring = configuation.GetSection("ConnectionStrings").GetSection("DBConnection").Value;
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}
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public static DataTable ObjectToDataTable(object o)
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{
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DataTable dt = new DataTable();
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List<PropertyInfo> properties = o.GetType().GetProperties().ToList();
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foreach (PropertyInfo prop in properties)
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dt.Columns.Add(prop.Name, prop.PropertyType);
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dt.TableName = o.GetType().Name;
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return dt;
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}
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public IConfigurationRoot GetConfiguration()
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{
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var builder = new ConfigurationBuilder().SetBasePath(Directory.GetCurrentDirectory()).AddJsonFile("appsettings.json", optional: true, reloadOnChange: true);
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return builder.Build();
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}
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public DataTable Get_Tabledata(string Tablename, bool StoredProc = false, bool is_SQL_String = false)
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{
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SqlConnection sqlconnect = new SqlConnection();
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DataSet ds = new DataSet();
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ds.Tables.Clear();
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sqlconnect.ConnectionString = this.connectionstring;
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sqlconnect.Open();
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SqlDataAdapter da = new SqlDataAdapter("", sqlconnect);
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SqlCommand sqlcmd = new SqlCommand();
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sqlcmd.Connection = sqlconnect;
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if (StoredProc == true)
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{
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sqlcmd.CommandType = CommandType.StoredProcedure;
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if (Tablename.IndexOf("@@Mandantnr@@") > 0)
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Tablename = Tablename.Replace("@@Mandantnr@@", "");
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sqlcmd.CommandText = Tablename;
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}
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else
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{
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sqlcmd.CommandType = CommandType.Text;
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sqlcmd.CommandText = "Select * from " + Tablename;
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}
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if (is_SQL_String == true)
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sqlcmd.CommandText = Tablename;
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da.SelectCommand = sqlcmd;
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da.Fill(dsdaten, "Daten");
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sqlconnect.Close();
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return dsdaten.Tables[0];
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}
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public void Get_Tabeldata_for_Update(string Tablename, bool StoredProc = false, bool is_SQL_String = false)
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{
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dsdaten.Clear();
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dsdaten.Tables.Clear();
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dadaten = new SqlDataAdapter(Tablename, this.connectionstring);
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dadaten.Fill(dsdaten, Tablename);
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}
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public void Update_Tabeldata()
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{
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SqlCommandBuilder cb = new SqlCommandBuilder(dadaten);
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dadaten.Update(dsdaten, dsdaten.Tables[0].TableName);
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}
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public Dictionary<string, List<object>> DatatableToDictionary(DataTable dataTable)
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{
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var dict = new Dictionary<string, List<object>>();
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foreach (DataColumn dataColumn in dataTable.Columns)
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{
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var columnValueList = new List<object>();
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foreach (DataRow dataRow in dataTable.Rows)
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{
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columnValueList.Add(dataRow[dataColumn.ColumnName]);
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}
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dict.Add(dataColumn.ColumnName, columnValueList);
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}
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return dict;
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}
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#region "Converters"
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public List<T> ConvertDataTable<T>(DataTable dt)
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{
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List<T> data = new List<T>();
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foreach (DataRow row in dt.Rows)
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{
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T item = GetItem<T>(row);
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data.Add(item);
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}
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return data;
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}
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private T GetItem<T>(DataRow dr)
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{
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Type temp = typeof(T);
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T obj = Activator.CreateInstance<T>();
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foreach (DataColumn column in dr.Table.Columns)
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{
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foreach (PropertyInfo pro in temp.GetProperties())
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{
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if (pro.Name == column.ColumnName)
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pro.SetValue(obj, dr[column.ColumnName], null/* TODO Change to default(_) if this is not a reference type */);
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else
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continue;
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}
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}
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return obj;
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}
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public IEnumerable<T> GetEntities<T>(DataTable dt)
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{
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if (dt == null)
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{
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return null;
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}
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List<T> returnValue = new List<T>();
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List<string> typeProperties = new List<string>();
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T typeInstance = Activator.CreateInstance<T>();
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foreach (DataColumn column in dt.Columns)
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{
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var prop = typeInstance.GetType().GetProperty(column.ColumnName, BindingFlags.NonPublic | BindingFlags.Instance | BindingFlags.Public);
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if (prop != null)
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{
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typeProperties.Add(column.ColumnName);
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}
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}
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foreach (DataRow row in dt.Rows)
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{
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T entity = Activator.CreateInstance<T>();
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foreach (var propertyName in typeProperties)
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{
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if (row[propertyName] != DBNull.Value)
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{
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string str = row[propertyName].GetType().FullName;
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if (entity.GetType().GetProperty(propertyName).PropertyType == typeof(System.String))
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{
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object Val = row[propertyName].ToString();
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entity.GetType().GetProperty(propertyName, BindingFlags.NonPublic | BindingFlags.Instance | BindingFlags.Public).SetValue(entity, Val, BindingFlags.NonPublic | BindingFlags.Instance | BindingFlags.Public, null, null, null);
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}
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else if (entity.GetType().GetProperty(propertyName).PropertyType == typeof(System.Guid))
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{
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object Val = Guid.Parse(row[propertyName].ToString());
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entity.GetType().GetProperty(propertyName, BindingFlags.NonPublic | BindingFlags.Instance | BindingFlags.Public).SetValue(entity, Val, BindingFlags.NonPublic | BindingFlags.Instance | BindingFlags.Public, null, null, null);
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}
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else
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{
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entity.GetType().GetProperty(propertyName, BindingFlags.NonPublic | BindingFlags.Instance | BindingFlags.Public).SetValue(entity, row[propertyName], BindingFlags.NonPublic | BindingFlags.Instance | BindingFlags.Public, null, null, null);
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}
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}
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else
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{
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entity.GetType().GetProperty(propertyName, BindingFlags.NonPublic | BindingFlags.Instance | BindingFlags.Public).SetValue(entity, null, BindingFlags.NonPublic | BindingFlags.Instance | BindingFlags.Public, null, null, null);
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}
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}
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returnValue.Add(entity);
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}
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return returnValue.AsEnumerable();
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}
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public string DataTableToJSONWithStringBuilder(DataTable table)
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{
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var JSONString = new StringBuilder();
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if (table.Rows.Count > 0)
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{
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JSONString.Append("[");
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for (int i = 0; i < table.Rows.Count; i++)
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{
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JSONString.Append("{");
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for (int j = 0; j < table.Columns.Count; j++)
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{
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if (j < table.Columns.Count - 1)
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{
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JSONString.Append("\"" + table.Columns[j].ColumnName.ToString() + "\":" + "\"" + table.Rows[i][j].ToString() + "\",");
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}
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else if (j == table.Columns.Count - 1)
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{
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JSONString.Append("\"" + table.Columns[j].ColumnName.ToString() + "\":" + "\"" + table.Rows[i][j].ToString() + "\"");
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}
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}
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if (i == table.Rows.Count - 1)
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{
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JSONString.Append("}");
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}
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else
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{
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JSONString.Append("},");
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}
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}
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JSONString.Append("]");
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}
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return JSONString.ToString();
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}
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public string ConvertDataTableToString(DataTable table)
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{
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int iColumnCount = table.Columns.Count;
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int iRowCount = table.Rows.Count;
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int iTempRowCount = 0;
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string strColumName = table.Columns[0].ColumnName;
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string strOut = "{";
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foreach (DataRow row in table.Rows)
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{
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strOut = strOut + "{";
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foreach (DataColumn col in table.Columns)
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{
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string val = row.Field<string>(col.ColumnName);
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strOut = strOut + col.ColumnName + ":" + val;
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if (col.Ordinal != iColumnCount - 1)
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{
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strOut = strOut + ",";
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}
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}
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strOut = strOut + "}";
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iTempRowCount++;
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if (iTempRowCount != iRowCount)
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{
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strOut = strOut + ",";
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}
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}
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strOut = strOut + "}";
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return strOut;
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}
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#endregion
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}
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}
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