.net DataTable 取值辅助类

public class DataTableComon
    {
        public static string GetCellString(DataTable dt,int row, int column)
        {
            string strValue = string.Empty;
            try
            {
                if (dt == null || dt.Rows.Count == 0)
                    return null;
                object objValue=dt.Rows[row][column];
                if (objValue == null || Convert.IsDBNull(objValue))
                    return null;
                strValue = objValue.ToString();
            }
            catch (Exception)
            {
            }
            return strValue;
        }
        public static string GetCellString(DataTable dt, int row, string columnName)
        {
            string strValue = string.Empty;
            try
            {
                if (dt == null || dt.Rows.Count == 0)
                    return null;
                object objValue = dt.Rows[row][columnName];
                if (objValue == null || Convert.IsDBNull(objValue))
                    return null;
                strValue = objValue.ToString();
            }
            catch (Exception)
            {
            }
            return strValue;
        }
        public static int GetCellInt(DataTable dt, int row, int column)
        {
            int intValue = 0;
            try
            {
                if (dt == null || dt.Rows.Count == 0)
                    return 0;
                object objValue = dt.Rows[row][column];
                if (objValue == null || Convert.IsDBNull(objValue))
                    return 0;
                intValue = Convert.ToInt32(objValue);
            }
            catch (Exception)
            {
            }
            return intValue;
        }
        public static int GetCellInt(DataTable dt, int row, string columnName)
        {
            int intValue = 0;
            try
            {
                if (dt == null || dt.Rows.Count == 0)
                    return 0;
                object objValue = dt.Rows[row][columnName];
                if (objValue == null || Convert.IsDBNull(objValue))
                    return 0;
                intValue = Convert.ToInt32(objValue);
            }
            catch (Exception)
            {
            }
            return intValue;
        }

        public static decimal GetCellDecimal(DataTable dt, int row, int column)
        {
            decimal intValue = 0;
            try
            {
                if (dt == null || dt.Rows.Count == 0)
                    return 0;
                object objValue = dt.Rows[row][column];
                if (objValue == null || Convert.IsDBNull(objValue))
                    return 0;
                intValue = Convert.ToDecimal(objValue);
            }
            catch (Exception)
            {
            }
            return intValue;
        }
        public static decimal GetCellDecimal(DataTable dt, int row, string columnName)
        {
            decimal intValue = 0;
            try
            {
                if (dt == null || dt.Rows.Count == 0)
                    return 0;
                object objValue = dt.Rows[row][columnName];
                if (objValue == null || Convert.IsDBNull(objValue))
                    return 0;
                intValue = Convert.ToDecimal(objValue);
            }
            catch (Exception)
            {
            }
            return intValue;
        }
    }