protected override void Seed(Context context)
{
base.Seed(context);
Seeding.Seed(context);
}
public void InitializeDatabase(Context context)
{
if (System.Diagnostics.Debugger.IsAttached && context.Database.Exists())
//&& !context.Database.CompatibleWithModel(false))
{
context.Database.Delete();
}
if (!context.Database.Exists())
{
context.Database.Create();
Seeding.Seed(context);
var contextObject = context as System.Object;
var contextType = contextObject.GetType();
var properties = contextType.GetProperties();
System.Type t = null;
string tableName = null;
string fieldName = null;
foreach (var pi in properties)
{
if (pi.PropertyType.IsGenericType && pi.PropertyType.Name.Contains("DbSet"))
{
t = pi.PropertyType.GetGenericArguments()[0];
var mytableName = t.GetCustomAttributes(typeof(DisplayNameAttribute), true);
if (mytableName.Length > 0)
{
DisplayNameAttribute mytable = mytableName[0] as DisplayNameAttribute;
// tableName = mytable.Name;
}
else
{
tableName = pi.Name;
// EXECUTE sp_addextendedproperty N'MS_Description', '销售套餐1', N'user', N'dbo', N'table', N'SalePackages'
}
FieldInfo tableNameField = t.GetField("LogClass");
string descTable = tableName;
if (tableNameField != null)
{
descTable = tableNameField.GetValue(t) + "";
}
///0 tablename
string dropTableDesc = " EXEC sp_dropextendedproperty 'MS_Description','user',dbo,'table','{0}' ";
///0 tabledesc,1 tablename
string addTableDesc = " EXECUTE sp_addextendedproperty N'MS_Description', '{0}', N'user', N'dbo', N'table', N'{1}'";
try
{
context.Database.ExecuteSqlCommand(string.Format(dropTableDesc, tableName));
}
catch { }
try
{
context.Database.ExecuteSqlCommand(string.Format(addTableDesc, descTable, tableName));
}
catch { }
// string descTableName = pi.get
// t.GetProperty("LogClass");
foreach (var piEntity in t.GetProperties())
{
if (piEntity.GetCustomAttributes(typeof(DisplayNameAttribute), true).Length > 0)
{
fieldName = piEntity.Name;
//EXEC sp_dropextendedproperty 'MS_Description','user',dbo,'table','Clients','column',N'SalesId';
//EXEC sp_addextendedproperty N'MS_Description','自动编号1',N'user',N'dbo',N'table',N'Clients',N'column',N'SalesId'
//说明文字先后顺序，先description -> displayname
string desc = ((DisplayNameAttribute)piEntity.GetCustomAttributes(typeof(DisplayNameAttribute), true)[0]).DisplayName;
if (piEntity.GetCustomAttributes(typeof(DescriptionAttribute), true).Length > 0)
{
desc = ((DescriptionAttribute)piEntity.GetCustomAttributes(typeof(DescriptionAttribute), true)[0]).Description;
}
//0 tablename,1 columnname,2 desc
string dropdesc = string.Format("EXEC sp_dropextendedproperty 'MS_Description','user',dbo,'table','{0}','column',N'{1}'", tableName, fieldName);
string createdesc = string.Format("EXEC sp_addextendedproperty N'MS_Description','{2}',N'user',N'dbo',N'table',N'{0}',N'column',N'{1}'", tableName, fieldName, desc);
try
{
context.Database.ExecuteSqlCommand(dropdesc);
}
catch { }
try
{
context.Database.ExecuteSqlCommand(createdesc);
}
catch { }
}
}
}
}
}
}
