Unexplained Behaviour

Cricket

Active member
Joined
Jan 6, 2005
Messages
28
Location
Hamilton, ON, Canada
Programming Experience
5-10
I'm creating a form that has a number of dropdown lists that relate to different tables. I have a strange problem that I can't seem to figure out.

I can create a list of customers, and a list of standard features. But for some reason after I create the list of standard features the displayed value of the customer list is 'System.Data.DataRowView' for each item. I've created a ton of other lists on this form and none of them mess up except this particular one. I've stepped through the code and know that the problem is between these two lists. To fix it I simple run the sub that created the customer list again and voila all is well. But I would love it if someone could tell me why exactly this is occuring.

Here is the code in question (I've only pasted in the applicable code).

VB.NET:
 [size=2]
[/size][size=2][color=#008000]' Sets up the Customer list.
 
[/color][/size][size=2][color=#0000ff]Private[/color][/size][size=2][color=#0000ff]Sub[/color][/size][size=2] SetupCustomerList()
 
[/size][size=2][color=#0000ff]Me[/color][/size][size=2].daCustomerList.SelectCommand = [/size][size=2][color=#0000ff]New[/color][/size][size=2] System.Data.OleDb.OleDbCommand(CsCustomerList, modGlobal.ocConnection)
 
GetCustomerList()
 
[/size][size=2][color=#0000ff]Me[/color][/size][size=2].cboCustomer.DisplayMember = "FullName"
 
[/size][size=2][color=#0000ff]Me[/color][/size][size=2].cboCustomer.ValueMember = "uid_Customer"
 
[/size][size=2][color=#0000ff]Me[/color][/size][size=2].cboCustomer.DataSource = [/size][size=2][color=#0000ff]Me[/color][/size][size=2].dtCustomerList.DefaultView()
 
[/size][size=2][color=#0000ff]End[/color][/size][size=2][color=#0000ff]Sub
 
[/color][/size][size=2][color=#008000]' Gets a list of customers.
 
[/color][/size][size=2][color=#0000ff]Private[/color][/size][size=2][color=#0000ff]Sub[/color][/size][size=2] GetCustomerList()
 
[/size][size=2][color=#0000ff]If[/color][/size][size=2][color=#0000ff]Me[/color][/size][size=2].dsPO.Tables.Contains("tblCustomer") [/size][size=2][color=#0000ff]Then
 
[/color][/size][size=2][color=#0000ff]Me[/color][/size][size=2].dsPO.Tables("tblCustomer").Clear()
 
[/size][size=2][color=#0000ff]End[/color][/size][size=2][color=#0000ff]If
 
[/color][/size][size=2][color=#0000ff]Me[/color][/size][size=2].daCustomerList.Fill([/size][size=2][color=#0000ff]Me[/color][/size][size=2].dsPO, "tblCustomer")
 
[/size][size=2][color=#0000ff]Me[/color][/size][size=2].dtCustomerList = [/size][size=2][color=#0000ff]Me[/color][/size][size=2].dsPO.Tables("tblCustomer")
 
[/size][size=2][color=#0000ff]Me[/color][/size][size=2].dtCustomerList.DefaultView.Sort = CsCustomerSort
 
[/size][size=2][color=#0000ff]End[/color][/size][size=2][color=#0000ff]Sub[/color][/size]

[size=2][color=#0000ff][size=2][/size][size=2][color=#008000]' Sets up the Standard Feature List.
 
[/color][/size][size=2][color=#0000ff]Private[/color][/size][size=2][color=#0000ff]Sub[/color][/size][size=2] SetupStandardFeatureList()
 
[/size][size=2][color=#0000ff]Try
 
[/color][/size][size=2][color=#0000ff]Dim[/color][/size][size=2] ocCommand [/size][size=2][color=#0000ff]As[/color][/size][size=2][color=#0000ff]New[/color][/size][size=2] System.Data.OleDb.OleDbCommand(CsStandardFeatureList, modGlobal.ocConnection)
 
[/size][size=2][color=#0000ff]With[/color][/size][size=2] ocCommand.Parameters.Add("@fuid_Series", [/size][size=2][color=#0000ff]GetType[/color][/size][size=2]([/size][size=2][color=#0000ff]Long[/color][/size][size=2]))
 
.SourceColumn = "fuid_Series"
 
[/size][size=2][color=#0000ff]End[/color][/size][size=2][color=#0000ff]With
 
[/color][/size][size=2][color=#0000ff]Me[/color][/size][size=2].daStandardFeatureList.SelectCommand = ocCommand
 
GetStandardFeatureList([/size][size=2][color=#0000ff]CLng[/color][/size][size=2]([/size][size=2][color=#0000ff]Me[/color][/size][size=2].cboSeries.SelectedValue))
 
[/size][size=2][color=#0000ff]Me[/color][/size][size=2].lstStandardFeatures.DisplayMember = "Feature"
 
[/size][size=2][color=#0000ff]Me[/color][/size][size=2].lstStandardFeatures.ValueMember = "uid_StandardFeature"
 
[/size][size=2][color=#0000ff]Me[/color][/size][size=2].lstStandardFeatures.DataSource = [/size][size=2][color=#0000ff]Me[/color][/size][size=2].dtStandardFeatureList.DefaultView()
 
[/size][size=2][color=#0000ff]Catch[/color][/size][size=2] ex [/size][size=2][color=#0000ff]As[/color][/size][size=2] Exception
 
MsgBox(ex.Message())
 
[/size][size=2][color=#0000ff]End[/color][/size][size=2][color=#0000ff]Try
 
[/color][/size][size=2][color=#0000ff]End[/color][/size][size=2][color=#0000ff]Sub
 
[/color][/size][size=2][color=#008000]' Gets the Standard Feature List.
 
[/color][/size][size=2][color=#0000ff]Private[/color][/size][size=2][color=#0000ff]Sub[/color][/size][size=2] GetStandardFeatureList([/size][size=2][color=#0000ff]ByVal[/color][/size][size=2] lSeries [/size][size=2][color=#0000ff]As[/color][/size][size=2][color=#0000ff]Long[/color][/size][size=2])
 
[/size][size=2][color=#0000ff]If[/color][/size][size=2][color=#0000ff]Me[/color][/size][size=2].dsPO.Tables.Contains("tblStandardFeature") [/size][size=2][color=#0000ff]Then
 
[/color][/size][size=2][color=#0000ff]Me[/color][/size][size=2].dsPO.Tables("tblStandardFeature").Clear()
 
[/size][size=2][color=#0000ff]End[/color][/size][size=2][color=#0000ff]If
 
[/color][/size][size=2][color=#0000ff]Me[/color][/size][size=2].daStandardFeatureList.SelectCommand.Parameters("@fuid_Series").Value = lSeries
 
[/size][size=2][color=#0000ff]Me[/color][/size][size=2].daStandardFeatureList.Fill([/size][size=2][color=#0000ff]Me[/color][/size][size=2].dsPO, "tblStandardFeature")
 
[/size][size=2][color=#0000ff]Me[/color][/size][size=2].dtStandardFeatureList = [/size][size=2][color=#0000ff]Me[/color][/size][size=2].dsPO.Tables("tblStandardFeature")
 
[/size][size=2][color=#0000ff]Me[/color][/size][size=2].dtStandardFeatureList.DefaultView.Sort = "[Feature]"
 
[/size][size=2][color=#0000ff]End[/color][/size][size=2][color=#0000ff]Sub
 
[/color][/size][/color][/size]
 

ritesh_jain1982

Well-known member
Joined
Jan 10, 2005
Messages
53
Programming Experience
1-3
Hi,

Seem to be Stupid checking but just see wheather DisplayMember and Valumember Text are Same as That of Fileds ur fetching in ur SQL Query (i mean check for Case sensitivity of the Text)

Regards,
Ritesh
 
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