Attributes are using to add information to Metadata. DotNet
provides two types of attributes one is Custom and other is Pre-defined. The
pre-defined Attribute AttributeUsage will help us to create new
Attributes for classes .It contain few parameters like.
ValidON:
Means which attributes can be placed. There is an enumeration for this, Default
value is AttributeTargets.All.
AllowMultiple:
This is used for activating multiple creation of the property. Default is single
use.
Inherited:
The parameter inherited (optional)
provides value for the Inherited.
The .Net Framework
allows creation of custom attributes that can be used to store declarative
information and can be retrieved at run-time. The below example helps to add
the QC fix information’s to all methods, classes..
[AttributeUsage(AttributeTargets.Class
|
AttributeTargets.Constructor |
AttributeTargets.Field |
AttributeTargets.Method |
AttributeTargets.Property,
AllowMultiple = true)]
public class FixInfo : System.Attribute
{
private string qcNo;
private string
name_ofOwnr;
private string
dateofChage;
public string
description;
public FixInfo(string
bg, string dev, string
d)
{
this.qcNo = bg;
this.name_ofOwnr = dev;
this.dateofChage = d;
}
public string QCNo
{
get
{
return qcNo;
}
}
public string Owner
{
get
{
return name_ofOwnr;
}
}
public string Date
{
get
{
return dateofChage;
}
}
public string Description
{
get
{
return description;
}
set
{
description = value;
}
}
}
}
The implementation of this Attribute like this.
[FixInfo("QCXXX1","Santhosh","01/12/2014", "Added
additional Condition")]
[FixInfo("QCXX81", "Santhosh",
"20/12/2014", "NUll value condition check added")]
public void
getmarks()
{
//.............
///Yourlogic
/////...................
}
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