C# 和SQL Server 类型转换

Posted 2020-06-18 技术学习

/// <summary>
/// 数据库中与C#中的数据类型对照
/// </summary>
/// <param name="type"></param>
/// <returns></returns>
private string ChangeToCSharpType(string type)
{
    string reval = string.Empty;
    switch (type.ToLower())
    {
        case "int":
            reval = "Int32";
            break;
        case "text":
            reval = "String";
            break;
        case "bigint":
            reval = "Int64";
            break;
        case "binary":
            reval = "System.Byte[]";
            break;
        case "bit":
            reval = "Boolean";
            break;
        case "char":
            reval = "String";
            break;
        case "datetime":
            reval = "System.DateTime";
            break;
        case "decimal":
            reval = "System.Decimal";
            break;
        case "float":
            reval = "System.Double";
            break;
        case "image":
            reval = "System.Byte[]";
            break;
        case "money":
            reval = "System.Decimal";
            break;
        case "nchar":
            reval = "String";
            break;
        case "ntext":
            reval = "String";
            break;
        case "numeric":
            reval = "System.Decimal";
            break;
        case "nvarchar":
            reval = "String";
            break;
        case "real":
            reval = "System.Single";
            break;
        case "smalldatetime":
            reval = "System.DateTime";
            break;
        case "smallint":
            reval = "Int16";
            break;
        case "smallmoney":
            reval = "System.Decimal";
            break;
        case "timestamp":
            reval = "System.DateTime";
            break;
        case "tinyint":
            reval = "System.Byte";
            break;
        case "uniqueidentifier":
            reval = "System.Guid";
            break;
        case "varbinary":
            reval = "System.Byte[]";
            break;
        case "varchar":
            reval = "String";
            break;
        case "Variant":
            reval = "Object";
            break;
        default:
            reval = "String";
            break;
    }
    return reval;
}