How do i access the member of another class from aclass through a reference object?

petre ricardo

Hi friends,
I have written the followin two classes in mY BLL:

 

 
public class InventoryItem
{
public int MinOrderQuantity { get; set; }
public int MaxOrderQuantity { get; set; }

internal MasterItemInventory myMasterItemInventory;
public ItemStockLevel _MyItemStockLevel;

public InventoryItem()
{
try
{
myMasterItemInventory = new MasterItemInventory();
_MyItemStockLevel = new ItemStockLevel();
}
catch
{ 
throw;
} 
}
public byte Save()
{
try
{ 
 
return myMasterItemInventory.Save(this);
}
catch
{ 
throw;
} 
}
}
 
public class ItemStockLevel
{
public int ItemID { get; set; }
public int StockTakeDate { get; set; }
public int QIS { get; set; }
public ItemStockLevel()
{ 
//no code
}
public byte Save()
{
//no code 
}
}

The above two classse are within the same namesapce BLL
then i tried to access the members of ItemStockLevel from the reference myIventoryItem.MyItemStockLevels from my client app as:
using BLL:
public class Form{
private void btnSave_Click(object sender, EventArgs e)
{
myIventoryItem._MyItemStockLevel.StockTakeDate = int.Parse(cmbStockTakeDate.Text);
byte scode = myIventoryItem.Save();
}
}
the line :
myIventoryItem._MyItemStockLevel.StockTakeDate = int.Parse(cmbStockTakeDate.Text);

gives the followig error

Error 1 'ICSBLL.InventoryItem' does not contain a definition for '_MyItemStockLevel' and no extension method '_MyItemStockLevel' accepting a first argument of type 'ICSBLL.InventoryItem' could be found (are you missing a using directive or an assembly reference?) F:\C#\Lab\InventoryControlSystem\InventoryControlSystem\frmInventoryItemAdmin.cs 60 36 InventoryControlSystem

Why this happense and how do i fix this?

3 Replies

Know the answer? Post it — somebody with the same question will find it here.

petre ricardo16y ago
Hi friend,
you program compiles well : ) at follows the pattern of my buggy pogram but it doesnt show any issues, but in my program it's areally annoying pain in back side issue that i cannot see where problem is... any way before the link to the code i would like state all the things that i have done:
1. each time when sit i reopn the VS, but it didnt fx the problem
2. i cant see any issus with namespace, sam hobs sample app follows the same pattern but tt doesnt give any error
3. when i remove the lines that gives error it builds. But i need those lines so that i could assign values to ItemStockLevel object
4.I'v tried re typing, it even shows the reference variables _MyItemStockLevel under insellisense it even show the members of ItemStocklevel under _MyItemStockLevel but when i assign a value with the correct type it gives the issue

here is link to the complete code http://www.mediafire.com/?hm0ywwzjzym
thanks
Sam Hobbs16y ago
Attached is (I hope) a console program that has a modified version of most of your code. It compiles, but it probably does not do what you need. I modified a few things to get it to work. If you can create a console program such as this that shows the problem, then it will be easier to solve. My guess is that when you create the console program, the problem will be simple enough for you to be able to solve it yourself. This is the type of thing I do often. You can create a project you can use temporarily for diagnosis of problems such as this. I sure do that a lot; it really helps for problems such as the many problems I help with in these forums. If after you create the small (console) version of the problem, the solution is not obvious, then post the entire program as I did so it is easy for others to work with.

Amit Choudhary16y ago

hi peter,
i don't think you can set the value of a class member using its object in another class and accessing it like the member. Try the following
code your problem will get solved

public class InventoryItem
{
 public static setStockDate(DateTime value)
{
ItemStockLevel _MyItemStockLevel = new ItemStockLevel();_MyItemStockLevel.StockTakeDate=value;
}

and your line should be like this


myIventoryItem.setStockDate(Convert.ToDateTime(cmbStockTakeDate.Text));

Hope it helps you.

Please Don't forget to mark as answer if it helps you.