using System;
using System.Collections.Generic;
using System.Text;
using System.Data;



namespace Kenneth.DotNet.EntityTool
{
    public class AppCommon
    { 
        #region 转换SQL数据类型到C#数据类型...
        /// <summary>
        /// 转换SQL数据类型到C#数据类型
        /// </summary>
        /// <param name="sqlType">sql数据类型</param>
        /// <returns>C#数据类型</returns>
        /// 
        public static string ConvertSqlType(string typecode)
        {
            SqlDbType cType = new SqlDbType();

            typecode = typecode.Trim().ToLower();
            if(typecode == TypeCode.Boolean.ToString().ToLower())
                cType = SqlDbType.Bit;
            else if (typecode == TypeCode.Byte.ToString().ToLower())
                cType = SqlDbType.TinyInt;
            else if (typecode == TypeCode.Char.ToString().ToLower())
                cType = SqlDbType.Char;
            else if (typecode == TypeCode.DateTime.ToString().ToLower())
                cType = SqlDbType.DateTime;
            else if (typecode == TypeCode.Decimal.ToString().ToLower())
                cType = SqlDbType.Decimal;
            else if (typecode == TypeCode.Double.ToString().ToLower())
                cType = SqlDbType.Float;
            else if (typecode == TypeCode.Int16.ToString().ToLower())
                cType = SqlDbType.SmallInt;
            else if (typecode == TypeCode.Int32.ToString().ToLower())
                cType = SqlDbType.Int;
            else if (typecode == TypeCode.Int64.ToString().ToLower())
                cType = SqlDbType.BigInt;           
            else if (typecode == TypeCode.SByte.ToString().ToLower())
                cType = SqlDbType.Binary;
            else if (typecode == TypeCode.Single.ToString().ToLower())
                cType = SqlDbType.Real;            
            else if (typecode == TypeCode.String.ToString().ToLower())
                cType = SqlDbType.NVarChar;
            else 
                cType = SqlDbType.VarChar;


            return "SqlDbType." + cType.ToString();
        }


        public static string ConvertTypeName(Type type)
        {
            string name = "";
            //string typecode = type.ToString().ToLower();

            //if (typecode == "system." + TypeCode.Boolean.ToString().ToLower())
            //    name = type.Name + "?";
            //else if (typecode == "system." + TypeCode.Byte.ToString().ToLower())
            //    name = type.Name + "?";
            //else if (typecode == "system." + TypeCode.DateTime.ToString().ToLower())
            //    name = type.Name + "?";
            //else if (typecode == "system." + TypeCode.Decimal.ToString().ToLower())
            //    name = type.Name + "?";
            //else if (typecode == "system." + TypeCode.Double.ToString().ToLower())
            //    name = type.Name + "?";
            //else if (typecode == "system." + TypeCode.Int16.ToString().ToLower())
            //    name = type.Name + "?";
            //else if (typecode == "system." + TypeCode.Int32.ToString().ToLower())
            //    name = type.Name + "?";
            //else if (typecode == "system." + TypeCode.Int64.ToString().ToLower())
            //    name = type.Name + "?";
            //else if (typecode == "system." + TypeCode.SByte.ToString().ToLower())
            //    name = type.Name + "?";
            //else if (typecode == "system." + TypeCode.Single.ToString().ToLower())
            //    name = type.Name + "?";          

            //else
                name = type.Name;


            return name;
        }

        #endregion
        
    }

    
}