/// <summary>
/// Creates the db provider.
/// </summary>
/// <param name="connectionString">Name of the conn STR.</param>
/// <returns>The db provider.</returns>
public static DbProvider CreateDbProvider(ProviderType providerType, string connectionString)
{
try
{
string[] assAndClass = EnumDescriptionAttribute.GetDescription(providerType).Split(',');
DbProvider dbProvider;
if (assAndClass.Length > 1)
{
dbProvider = CreateDbProvider(assAndClass[1].Trim(), assAndClass[0].Trim(), connectionString);
}
else
{
dbProvider = CreateDbProvider(null, assAndClass[0].Trim(), connectionString);
}
if (dbProvider != null)
{
dbProvider.ConnectName = "Default";
}
return(dbProvider);
}
catch
{
throw;
}
}
/// <summary>
/// 获取枚举类型的描述
/// </summary>
/// <param name="enumObj"></param>
/// <returns></returns>
public static string GetDescription(object enumObj)
{
Type enumType = enumObj.GetType();
if (!enumType.IsEnum)
{
throw new Exception("参数不是枚举类型！");
}
FieldInfo fieldInfo = enumType.GetField(enumObj.ToString());
object[] attribArray = fieldInfo.GetCustomAttributes(false);
if (attribArray.Length == 0)
{
return(null);
}
EnumDescriptionAttribute attrib = attribArray[0] as EnumDescriptionAttribute;
return(attrib.Description);
}
/// <summary>
/// 获取枚举类型的所有描述
/// </summary>
/// <param name="enumType"></param>
/// <returns></returns>
public static string[] GetDescriptions(Type enumType)
{
if (!enumType.IsEnum)
{
throw new Exception("参数不是枚举类型！");
}
FieldInfo[] fieldInfos = enumType.GetFields();
List <string> deslist = new List <string>();
foreach (FieldInfo fieldInfo in fieldInfos)
{
object[] attribArray = fieldInfo.GetCustomAttributes(false);
if (attribArray.Length == 0)
{
continue;
}
EnumDescriptionAttribute attrib = attribArray[0] as EnumDescriptionAttribute;
deslist.Add(attrib.Description);
}
return(deslist.ToArray());
}
