Common Class

Common class in Dot net Projects

This file contains the implementations of the all validation checks while binding data retrieved from database to model object or list

Make a new class with the name of Common in any of your project folder and copy the following code into them.

OR

Make a file with the name common.cs and after copying the following code into them just right click on the any project folder ->Add->Existing item

using System;
using System.Collections.Generic;
using System.Text;
using System.IO;

namespace Model
{
public class Common
{
#region DBNULL
public static string CheckStringNull(object obj)
{
try
{

if (obj == null)
{
return string.Empty;
}
else
{
if (obj == DBNull.Value)
{
return string.Empty;
}
else
{
return obj.ToString();
}
}
}
catch (Exception ex)
{
throw new Exception(“CheckStringNull”, ex);
}
}

public static int CheckIntegerNull(object obj)
{
try
{
if (obj == null)
{
return 0;
}
else
{
if ((obj == DBNull.Value) || (obj is string && string.IsNullOrEmpty((string)obj)))
{
return 0;
}
else
{
return System.Convert.ToInt32(obj);
}
}
}
catch (Exception ex)
{
throw new Exception(“CheckIntegerNull”, ex);
}
}
public static byte CheckByteNull(object obj)
{
try
{
if (obj == null)
{
return 0;
}
else
{
if ((obj == DBNull.Value) || (obj is string && string.IsNullOrEmpty((string)obj)))
{
return 0;
}
else
{
return System.Convert.ToByte(obj);
}
}
}
catch (Exception ex)
{
throw new Exception(“CheckIntegerNull”, ex);
}
}
public static long CheckLongNull(object obj)
{
try
{
if (obj == null)
{
return 0;
}
else
{
if (obj == DBNull.Value)
{
return 0;
}
else
{
return System.Convert.ToInt64(obj);
}
}
}
catch (Exception ex)
{
throw new Exception(“CheckLongNull”, ex);
}
}

public static double CheckDoubleNull(object obj)
{
try
{
if (obj == null)
{
return 0;
}
else
{
if (obj == DBNull.Value)
{
return 0;
}
else
{
return System.Convert.ToDouble(obj);
}
}
}
catch (Exception ex)
{
throw new Exception(“CheckDoubleNull”, ex);
}
}

public static bool CheckBooleanNull(object obj)
{
try
{
if (obj == null)
{
return false;
}
else
{
if (obj == DBNull.Value)
{
return false;
}
else
{
return System.Convert.ToBoolean(obj);
}
}
}
catch (Exception ex)
{
throw new Exception(“CheckBooleanNull”, ex);
}
}

public static short CheckShortNull(object obj)
{
try
{
if (obj == null)
{
return 0;
}
else
{
if (obj == DBNull.Value)
{
return 0;
}
else
{
return ((short)(obj));
}
}
}
catch (Exception ex)
{
throw new Exception(“CheckIntegerNull”, ex);
}
}
public static DateTime CheckDateTimeNull(object obj)
{
try
{
if (obj == null)
{
return System.DateTime.Now;
}
else
{
if (obj == DBNull.Value)
{
return System.DateTime.Now;
}
else
{
return (Convert.ToDateTime(obj));
}
}
}
catch (Exception ex)
{
throw new Exception(“CheckDateTimeNull”, ex);
}
}

public static Decimal CheckDecimalNull(object obj)
{
try
{
if (obj == null)
{
return 0;
}
else
{
if (obj == DBNull.Value)
{
return 0;
}
else
{
return System.Convert.ToDecimal(obj);
}
}
}
catch (Exception ex)
{
throw new Exception(“CheckDecimalNull”, ex);
}
}
public static float CheckfloatNull(object obj)
{
try
{
if (obj == null)
{
return 0;
}
else
{
if (obj == DBNull.Value)
{
return 0;
}
else
{
return float.Parse(obj.ToString());
}
}
}
catch (Exception ex)
{
throw new Exception(“CheckfloatNull”, ex);
}
}

public static string FndUnitDescirption(bool IsShowOnWizard, bool InkItem, bool FilmItem, bool PlateItem, string LargeFormatType, int USAUK)
{
string UnitDesc = “N/A”;
if (IsShowOnWizard == true)
UnitDesc = “Sheet(s)”;
else if (FilmItem == true)
UnitDesc = “Film(s)”;
else if (PlateItem == true)
UnitDesc = “Plate(s)”;
else if (LargeFormatType == “LF” && USAUK == 1)
UnitDesc = “SQFT”;
else if (LargeFormatType == “LF” && USAUK == 1)
UnitDesc = “SQM”;

return (UnitDesc);
}

public static byte[] CheckImageNull(object obj)
{
try
{
if (obj == null)
{
return null;
}
else
{
if (obj == DBNull.Value)
{
return null;
}
else
{
return (System.Byte[])(obj);
}
}
}
catch (Exception ex)
{
throw new Exception(“CheckfloatNull”, ex);
}
}

public static void CreateFolder(string Path)
{
Path = Path;
if (Directory.Exists(Path) == false)
{
Directory.CreateDirectory(Path);
}

}
#endregion
}

}