DataGridView - Property DataPropertyNam e

[WayDownUnder]

I have a datagridview that is bound to a cutom collection.
The classes contained in the custom collection have the properties that are
bound to the class . This works fine !
But if one of the properites exposes another object I would like to bind a
property of the sub object to the DataPropertyNam e this does not seem to
work.

eg main object customer
has a property called Address which is a contained object
inside object Address there is property call city.
so DataPropertyNam e = "Address.ci ty"
does not work !
Any ides

--
Life in the sun

[Luke Zhang [MSFT]]

Hi

Thank you for your posting! My understanding on this issue is: When a
collection which contains some objects is bound to a DataGridView and the
object in the collection contains some sub objects, then how to show the
property of the sub object in the DataGridView. If I am off base, please
feel free to let me know.

When you specify a datasource to a DataGridView, some DataGridViewCol umns
according the datasource would be added to the DataGridView automatically.
Each DataGridViewCol umn added to the DataGridView has a DataPropertyNam e
which is set a property name of the object. When running, the DataGridView
will show the property value of the object. But if the property is an
object and you¡¯d like to show the property of the sub object, you could
reach the aim by overriding the sub object¡¯s ¡°ToString¡± method. Below is
a sample:

public class Customer

{

private Address _CustAddress;

public Customer()

{

this._CustAddre ss = new Address();

}

public Address CustAddress

{

get { return this._CustAddre ss;}

set { this._CustAddre ss = value;}

}

}

public class Address

{

private string _City;

public string City

{

get { return this._City; }

set { this._City = value; }

}

public Address()

{

this._City = "";

}

public override string ToString()

{

return this._City;

}

}

You need to set the DataPropertyNam e = "CustAddres s".

Please let me know if you have any other concerns, or need anything else.

Luke Zhang
Microsoft Online Community Support

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[WayDownUnder]

Luke thanks for the answer.
It sort of helps but say you have more than one property on the sub object
you want to access through the datapropertynam e for each column
eg.

col1.DataProper tyName = "Address.ci ty"
col2.DataProper tyName = "Address.postco de"

public class Address

{

private string _City;
private string _postcode

public string PostCode

{

get { return this._PostCode; }

set { this._PostCode = value; }

}

public string City

{

get { return this._City; }

set { this._City = value; }

}

public Address()

{

this._City = "";

}

public override string ToString()

{

return this._City;

}

}


--
Life in the sun
"WayDownUnd er" wrote:

I have a datagridview that is bound to a cutom collection.
The classes contained in the custom collection have the properties that are
bound to the class . This works fine !
But if one of the properites exposes another object I would like to bind a
property of the sub object to the DataPropertyNam e this does not seem to
work.

eg main object customer
has a property called Address which is a contained object
inside object Address there is property call city.
so DataPropertyNam e = "Address.ci ty"
does not work !
Any ides

--
Life in the sun

[Linda Liu [MSFT]]

Hi,
Thanks for your reply. Unfortunately, there¡¯s no direct way to display a
owner object¡¯s properties and its sub-object¡¯s properties in one
DataGridView. But I suggest two methods to you may consider to get around
this problem. One method is to write some properties for the sub-object¡¯s
properties in the owner object. The following is an example.

public class Customer
{
private Address _CustAddress;
public Customer()
{
this._CustAddre ss = new Address();
}
public string CustAddress_Cit y
{
get { return this._CustAddre ss.City; }
}
public string CustAddress_Pos tCode
{
get { return this._CustAddre ss.PostCode; }
}

}
public class Address
{
private string _City;
private string _PostCode;
public string City
{
get { return this._City; }
set { this._City = value; }
}
public string PostCode
{
get { return this._PostCode; }
set { this._PostCode = value; }
}
public Address()
{
this._City = "";
this._PostCode = "";
}
}
You can set a DataGridView column¡¯s DataProperty Name as
¡°CustAddress_C ity¡± or ¡°CustAddress_P ostCode¡±.
And the other method is to merge your object collection into a datatable,
combine the properties of sub class as additional data columns and bind the
datatable to DataGridView.
Hope this is helpful to you.
Have a good day!

Sincerely,
Linda Liu
Microsoft Online Community Support
=============== =============== =============== ==========
When responding to posts, please "Reply to Group" via your newsreader so
that others may learn and benefit from your issue.
=============== =============== =============== ==========

(This posting is provided "AS IS", with no warranties, and confers no
rights.)