reading ColumnAttribute data

[lausivcid]

Hi,

How can ColumnAttribute data be read from xxDataClasses.cs Columns
like this?

[Column(Storage="_Name", DbType="VarChar(256) NOT
NULL", CanBeNull=false)]
public string Name
{
get
{
return this._Name;
}
set
{
if ((this._Name != value))
{
this.OnNameChanging(value);
this.SendPropertyChanging();
this._Name = value;
this.SendPropertyChanged("Name");
this.OnNameChanged();
}
}
}


Attribute.GetCustomAttribute(this.Name.GetType().Module,typeof(System.Data.Linq.Mapping.ColumnAttribute))
returned null,
Attribute.GetCustomAttributes(this.Name.GetType().Module) returned
only the System.Security.UnverifiableCodeAttribute attribute.
Specifically I want to parse DbType to get the maximum length of the
column. Is there any other way to find the column width?

Thanks,
lausivcid

 

[Nicholas Paldino [.NET/C# MVP]]

lausivcid,

Well, you have applied the attribute to a property, so you have to get
the PropertyInfo for that property (Name) and then call GetCustomAttributes
on that.


--
- Nicholas Paldino [.NET/C# MVP]
- (e-mail address removed)

in message
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[lausivcid]

Thanks! For

[Column(Storage="_Name", DbType="VarChar(256) NOT
NULL", CanBeNull=false)]
public string Name
{
get
{
return this._Name;
}
set
{
if ((this._Name != value))
{
this.OnNameChanging(value);
this.SendPropertyChanging();
this._Name = value;
this.SendPropertyChanged("Name");
this.OnNameChanged();
}
}
}

The class tyoe for this property is "job". The below code gets the
DbType string I am looking for.

foreach (MemberInfo mi in
job.GetType().GetMembers())
{
string attrib=
((System.Data.Linq.Mapping.ColumnAttribute)(mi.GetCustomAttributes(false)[0])).DbType;
}