Filling a DataGridView ComboBox with values in C/C++ - c++

Question

I'm creating a windows forms application for university. My data is stored in multible c arrays of abstract data types. Each array is displayed in it's own datagridview. This all works no problem.
Since the data is connected like in a database I added a new column to my parent table and set the ColumnType to DataGridViewComboBoxColumn. Now I need to fill this combobox with the data of a different array / datagridview.
I've already tried to add the options manually from my array as discribed in this question: Filling DataGridView ComboBox programatically in unbound mode?. Since I need to use C/C++ and this example uses vb the used functions are not availible. I can select my column dataGridView1->Columns[0] but the ->Items does not exist.
Is it possible to create a datasource from my arrays to link them directly? Or have I overlooked a way to add them manually from my array?

Answer 1

You don't provide any code, neither you describe well where did you ran into a problem. Assuming you're after unbound list to be filled into the DataGridViewComboBoxColumn, here is a simple example.
C#:
DataTable dt;
dt.Columns.Add("ID", typeof(Int32));
dt.Columns.Add("Category", typeof(string));
dt.Rows.Add({1, "Fruits"});
dt.Rows.Add({2, "Vegetables"});
dt.Rows.Add({3, "Trees"});
DataGridViewComboBoxColumn dgCol = this.DataGridView1.columns("Category");
dgCol.ValueMember = "ID";
dgCol.DisplayMember = "Category";
dgCol.DataSource = dt;
In this example, we create a DataTable, fill it with desired values and use it as a DataSource of the DataGridViewComboBoxColumn. Obviously, your values provided to this column in the DataGridView DataSource must match IDs in the list in new DataTable "dt".
You can convert an array or other data into DataTable or even use them directly as DataSource. It depends on what data you have. The principle will be very similar, though.
VB.NET:
Dim dt As DataTable
dt.Columns.Add("ID", GetType(Int32))
dt.Columns.Add("Category", GetType(String))
dt.Rows.Add({1, "Fruits"})
dt.Rows.Add({2, "Vegetables"})
dt.Rows.Add({3, "Trees"})
Dim dgCol As DataGridViewComboBoxColumn = Me.DataGridView1.columns("Category")
dgCol.ValueMember = "ID"
dgCol.DisplayMember = "Category"
dgCol.DataSource = dt