[Mono-bugs] [Bug 664833] New: Setting BindingSource.DataMember then DataSource causes DataMember to be nullified.

[bugzilla_noreply at novell.com]

https://bugzilla.novell.com/show_bug.cgi?id=664833

https://bugzilla.novell.com/show_bug.cgi?id=664833#c0


           Summary: Setting BindingSource.DataMember then DataSource
                    causes DataMember to be nullified.
    Classification: Mono
           Product: Mono: Class Libraries
           Version: 2.6.x
          Platform: x86
        OS/Version: Windows 7
            Status: NEW
          Severity: Normal
          Priority: P5 - None
         Component: Windows.Forms
        AssignedTo: mono-bugs at lists.ximian.com
        ReportedBy: cvolzke at live.com.au
         QAContact: mono-bugs at lists.ximian.com
          Found By: ---
           Blocker: ---


User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US)
AppleWebKit/532.5 (KHTML, like Gecko) Chrome/4.1.249.1036 Safari/532.5

When setting BindingSource.DataMember then BindingSource.DataSource in that
order, causes DataMember to be nullified.

Reproducible: Always

Steps to Reproduce:
1. Create a BindingSource.
2. Set BindingSource.DataMember to a value.
3. Set BindingSource.DataSource to a value.
Actual Results:  
DataMember becomes null after DataSource is set.

Expected Results:  
DataMember should remain the same when DataSource is set.

This looks like a simple coding error, the changes below fix.

Code modified in BindingSource.DataSource:
    [DefaultValue (null)]
    public object DataSource {
        get { return datasource; }
        set {
            if (datasource != value) {
                if (/*datasource*/ value == null) // this line changed; value
should be checked for null, not datasource!
                    datamember = String.Empty;

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