[Webinar] Streamline your web hosting managementRegister Today

x
?
Solved

combo box question for window forms

Posted on 2004-08-17
14
Medium Priority
?
201 Views
Last Modified: 2010-04-15
I'm moving an app from web to windows (cause I'm glutton for punishment) and I did something like this in the web app to fill out a dropDownList

            //Products
            foreach(int id in r.GetTableIdArray("ProductType")){            
                  ProductTypes.Items.Add(new ListItem(r.GetTableValues("ProductType", id), id.ToString()));
            }

which gives a label and a value to one item in the drop down.

I'm using a combo box in windows forms and I'm wondering how to do the same type of thing so that when I click submit I'll have the value behind the label?

right now I have this..

                  //Products
                  foreach(int id in r.GetTableIdArray("ProductType")){            
                        this.ProductTypeCB.Items.Add(r.GetTableValues("ProductType", id).ToString());
                  }

ideas and code welcomed

thanks
0
Comment
Question by:jayrod
  • 8
  • 5
14 Comments
 
LVL 7

Accepted Solution

by:
psdavis earned 1200 total points
ID: 11824214
How about just binding to the data directly?

ProductTypeCB.DataSource = this.m_dsMaster;
ProductTypeCB.DisplayMember = "Product.Description";
ProductTypeCB.ValueMember = "Product.ProductType";

Then SelectedValue and SelectedText will return what you need.
0
 
LVL 3

Author Comment

by:jayrod
ID: 11824241
this.m_dsMaster

That a dataset?
0
 
LVL 7

Expert Comment

by:psdavis
ID: 11824245
Yes it is.
0
Never miss a deadline with monday.com

The revolutionary project management tool is here!   Plan visually with a single glance and make sure your projects get done.

 
LVL 3

Author Comment

by:jayrod
ID: 11824275
I'm not returning datasets from this function

r.GetTableValues("ProductType", id)

The way that I usually do everything is that I will open and close connections at the beginning and end of each function. If I close the connection before returning the dataSet it seems to crap out.
0
 
LVL 7

Expert Comment

by:psdavis
ID: 11824318
In ADO.Net you open your connection, fill in a dataset, close your connection.  Then use your DataSet disconnected and anytime you wish.

Something like this should work out well.
 
DataTable productTypes = r.GetProductTypes( );
ProductTypeCB.DataSource = productTypes;
0
 
LVL 3

Author Comment

by:jayrod
ID: 11824533
ok thanks,

quick sub question, am I returning a dataset or a data table? I'm a little clueless on the particulars of ado.net
0
 
LVL 7

Expert Comment

by:psdavis
ID: 11824563
Either.  Both will work as a DataSource.  
0
 
LVL 3

Author Comment

by:jayrod
ID: 11824659
ok my function is set up like this;

SqlConnection connection = null;                  
DataSet r1 = null;

string retString = "";

try {
      try {
            connection = Helper.GetConnection();
      }
      catch(Exception ex) {
            throw(ex);
      }
      SqlParameter[] parms = new SqlParameter[2];
      parms[0] = new SqlParameter("@tableName", tableName);
      parms[1] = new SqlParameter("@identityId", identityId);

      r1 = SqlHelper.ExecuteDataset(connection, CommandType.StoredProcedure, "RatesValuesGet_SP", parms);
      
}
catch(Exception ex) {
      throw(ex);
}
finally {
      if(connection != null)
            connection.Dispose();
}

return r1;

the stored procedure will contain a resultset with two columns.. a column and an id..

How would I access them?
0
 
LVL 7

Expert Comment

by:psdavis
ID: 11824677
Not real sure, I always use typed datasets.  Plus, not sure of what your fields being returned looks like.  Something like this.

ProductTypeCB.DataSource = r1;
ProductTypeCB.DisplayMember = "r1.ProductID";
ProductTypeCB.ValueMember = "r1.ProductName";

0
 
LVL 3

Author Comment

by:jayrod
ID: 11824697
yep... that makes sense let me try that real quick
0
 
LVL 3

Author Comment

by:jayrod
ID: 11825062
welp.. can't get it to work at all.. so I'm gonna have to find a non ado solution
0
 
LVL 7

Assisted Solution

by:NipNFriar_Tuck
NipNFriar_Tuck earned 300 total points
ID: 11825780
Try this...

public class MyClass {
   public int Id;
   public string Name;

   public MyClass( int Id_p, string Name_p ) {
      id = Id_p;
      name = Name_p;
   }
}

ProductTypeCB.DisplayMemeber = Id;
ProductTypeCB.ValueMember = Name;

foreach(int id in r.GetTableIdArray("ProductType")){          
    this.ProductTypeCB.Items.Add(new MyClass(id, r.GetTableValues("ProductType", id).ToString()));
}
0
 
LVL 3

Author Comment

by:jayrod
ID: 11830527
Thanks nip.. But don't think that's gonna work for me either. I just think it's strange to have a dropdownlist type of object in asp.net not be present in windows applications??
0
 
LVL 3

Author Comment

by:jayrod
ID: 11851669
Had to go with another round about solution...
0

Featured Post

Get your problem seen by more experts

Be seen. Boost your question’s priority for more expert views and faster solutions

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Calculating holidays and working days is a function that is often needed yet it is not one found within the Framework. This article presents one approach to building a working-day calculator for use in .NET.
High user turnover can cause old/redundant user data to consume valuable space. UserResourceCleanup was developed to address this by automatically deleting user folders when the user account is deleted.
The Relationships Diagram is a good way to get an overall view of what a database is keeping track of. It is also where relationships are defined. A relationship specifies how two tables connect to each other. As you build tables in Microsoft Ac…
The video provides a quick and easy steps to migrate MBOX file to well known Outlook PST and Office 365. Besides this, it also supports and migrates more than 20 email clients of MBOX which include AppleMail, Opera, Thunderbird and SeaMonkey effortl…
Suggested Courses
Course of the Month8 days, 1 hour left to enroll

608 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question