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  • SqlServer数据类型、C#SqlDbType对应关系及转换(附代码)

    // SqlDbType转换为C#数据类型
    public static Type SqlType2CsharpType(SqlDbType sqlType)
    {
        switch (sqlType)
        {
            case SqlDbType.BigInt:
                return typeof(Int64);
            case SqlDbType.Binary:
                return typeof(Object);
            case SqlDbType.Bit:
                return typeof(Boolean);
            case SqlDbType.Char:
                return typeof(String);
            case SqlDbType.DateTime:
                return typeof(DateTime);
            case SqlDbType.Decimal:
                return typeof(Decimal);
            case SqlDbType.Float:
                return typeof(Double);
            case SqlDbType.Image:
                return typeof(Object);
            case SqlDbType.Int:
                return typeof(Int32);
            case SqlDbType.Money:
                return typeof(Decimal);
            case SqlDbType.NChar:
                return typeof(String);
            case SqlDbType.NText:
                return typeof(String);
            case SqlDbType.NVarChar:
                return typeof(String);
            case SqlDbType.Real:
                return typeof(Single);
            case SqlDbType.SmallDateTime:
                return typeof(DateTime);
            case SqlDbType.SmallInt:
                return typeof(Int16);
            case SqlDbType.SmallMoney:
                return typeof(Decimal);
            case SqlDbType.Text:
                return typeof(String);
            case SqlDbType.Timestamp:
                return typeof(Object);
            case SqlDbType.TinyInt:
                return typeof(Byte);
            case SqlDbType.Udt://自定义的数据类型
                return typeof(Object);
            case SqlDbType.UniqueIdentifier:
                return typeof(Object);
            case SqlDbType.VarBinary:
                return typeof(Object);
            case SqlDbType.VarChar:
                return typeof(String);
            case SqlDbType.Variant:
                return typeof(Object);
            case SqlDbType.Xml:
                return typeof(Object);
            default:
                return null;
        }
    }
    // sql server数据类型(如:varchar)转换为SqlDbType类型
    public static SqlDbType SqlTypeToSqlDbType(string sqlTypeString)
    {
        SqlDbType dbType = SqlDbType.Variant;//默认为Object
    
        switch (sqlTypeString.ToLower())
        {
            case "int":
                dbType = SqlDbType.Int;
                break;
            case "varchar":
                dbType = SqlDbType.VarChar;
                break;
            case "bit":
                dbType = SqlDbType.Bit;
                break;
            case "datetime":
                dbType = SqlDbType.DateTime;
                break;
            case "decimal":
                dbType = SqlDbType.Decimal;
                break;
            case "float":
                dbType = SqlDbType.Float;
                break;
            case "image":
                dbType = SqlDbType.Image;
                break;
            case "money":
                dbType = SqlDbType.Money;
                break;
            case "ntext":
                dbType = SqlDbType.NText;
                break;
            case "nvarchar":
                dbType = SqlDbType.NVarChar;
                break;
            case "smalldatetime":
                dbType = SqlDbType.SmallDateTime;
                break;
            case "smallint":
                dbType = SqlDbType.SmallInt;
                break;
            case "text":
                dbType = SqlDbType.Text;
                break;
            case "bigint":
                dbType = SqlDbType.BigInt;
                break;
            case "binary":
                dbType = SqlDbType.Binary;
                break;
            case "char":
                dbType = SqlDbType.Char;
                break;
            case "nchar":
                dbType = SqlDbType.NChar;
                break;
            case "numeric":
                dbType = SqlDbType.Decimal;
                break;
            case "real":
                dbType = SqlDbType.Real;
                break;
            case "smallmoney":
                dbType = SqlDbType.SmallMoney;
                break;
            case "sql_variant":
                dbType = SqlDbType.Variant;
                break;
            case "timestamp":
                dbType = SqlDbType.Timestamp;
                break;
            case "tinyint":
                dbType = SqlDbType.TinyInt;
                break;
            case "uniqueidentifier":
                dbType = SqlDbType.UniqueIdentifier;
                break;
            case "varbinary":
                dbType = SqlDbType.VarBinary;
                break;
            case "xml":
                dbType = SqlDbType.Xml;
                break;
        }
        return dbType;
    }

    转 https://www.cnblogs.com/jushen7925/p/10239807.html 

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  • 原文地址:https://www.cnblogs.com/pingfanren/p/12334375.html
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