Overview: I have a Windows Form application, built in .Net 4.7.2 using Visual Studio 2019. The form has 3 PartID combo boxes, allowing the user to select 3 distinct part IDs from a finite list of parts in the drop down.
Problem: Once the user selects a PartID in any combo box, the other 2 combo boxes are automatically set to that value.
private void Start()
{
DataTable POLines = GetLineNumsByPO(PO);
FillPartID1(POLines);
FillPartID2(POLines);
FillPartID3(POLines);
}
private void FillPartID1(DataTable poLines)
{
AutoCompleteStringCollection acs1 = new AutoCompleteStringCollection();
foreach (var rec in poLines.AsEnumerable())
acs1.Add(rec.ItemArray[1].ToString());
cbPartID1.AutoCompleteCustomSource = acs1;
cbPartID1.AutoCompleteMode = AutoCompleteMode.SuggestAppend;
cbPartID1.AutoCompleteSource = AutoCompleteSource.CustomSource;
cbPartID1.DataSource = poLines;
cbPartID1.DisplayMember = "PART_ID";
cbPartID1.ValueMember = "PART_ID";
cbPartID1.SelectedIndex = -1;
}
private void FillPartID2(DataTable poLines)
{
AutoCompleteStringCollection acs2 = new AutoCompleteStringCollection();
foreach (var rec in poLines.AsEnumerable())
acs2.Add(rec.ItemArray[1].ToString());
cbPartID2.AutoCompleteCustomSource = acs2;
cbPartID2.AutoCompleteMode = AutoCompleteMode.SuggestAppend;
cbPartID2.AutoCompleteSource = AutoCompleteSource.CustomSource;
cbPartID2.DataSource = poLines;
cbPartID2.DisplayMember = "PART_ID";
cbPartID2.ValueMember = "PART_ID";
cbPartID2.SelectedIndex = -1;
}
private void FillPartID3(DataTable poLines)
{
AutoCompleteStringCollection acs3 = new AutoCompleteStringCollection();
foreach (var rec in poLines.AsEnumerable())
acs3.Add(rec.ItemArray[1].ToString());
cbPartID3.AutoCompleteCustomSource = acs3;
cbPartID3.AutoCompleteMode = AutoCompleteMode.SuggestAppend;
cbPartID3.AutoCompleteSource = AutoCompleteSource.CustomSource;
cbPartID3.DataSource = poLines;
cbPartID3.DisplayMember = "PART_ID";
cbPartID3.ValueMember = "PART_ID";
cbPartID3.SelectedIndex = -1;
}
Solution: The Start() method was modified to have 3 separate datatables, each one passed to a partID comboBox. This resolved one combo box selection updating the other combo boxes
private void Start()
{
//3 separate datatables were required to avoid having one PartID selection update another PartID control.
DataTable POLines1 = GetLineNumsByPO(PO);
DataTable POLines2 = GetLineNumsByPO(PO);
DataTable POLines3 = GetLineNumsByPO(PO);
FillPartID1(POLines1);
FillPartID2(POLines2);
FillPartID3(POLines3);
}
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