Question

I have a datatable having 3 fields out of which I need to combine the values of the 2nd and 3rd field and display in the combo box. My approach is as under

DataTable dt = new DataTable();
dt.Columns.Add("Id", typeof(int));
dt.Columns.Add("Col1", typeof(string));
dt.Columns.Add("Col2", typeof(string));            

Enumerable.Range(1, 10).ToList().ForEach(i => dt.Rows.Add(i, string.Concat("Col1", i), string.Concat("Col2", i)));

comboBox1.DataSource = dt;
comboBox1.DisplayMember = string.Format("{0} : {1}","Col1","Col2");

But I am getting the output as System.Data.DataRowView…

Even I cannot change it from stored procedure level. I can however do this using entity approach by exposing some property but that will be a huge change at present. Is there any mechanism by which i can use the datatable as source and accomplish the work.

Thanks

Answer 1

I have done it as under

DataTable dt = new DataTable();
            dt.Columns.Add("Id", typeof(int));
            dt.Columns.Add("Col1", typeof(string));
            dt.Columns.Add("Col2", typeof(string));
            dt.Columns.Add("ConcatenatedField", typeof(string), "Col1 + ' : ' +Col2"); 

            Enumerable.Range(1, 10).ToList().ForEach(i => dt.Rows.Add(i, string.Concat("Col1", i), string.Concat("Col2", i)));

            comboBox1.DataSource = dt;
            comboBox1.DisplayMember = "ConcatenatedField";