Gridview, dynamic data within asp.net not working? - asp.net

Question

When I use the code below, my gridview (ID=Gridview2) object will populate perfectly using the datasource that is hard coded. I'd like to use a dynamically generated datatable (which when debugging the datatable is populated successfully complete with rows and columns). When I try to bind the dynamic data to my other gridview object (ID=Gridview1) and I verify that it has the datasource as my newly created datatable, nothing appears on the screen?
What am I doing wrong? Do I need to define templates for the dynamic code to work?
<asp:GridView ID="GridView2" runat="server" AllowSorting="True" BackColor="#DEBA84"
BorderColor="#DEBA84" BorderStyle="None" BorderWidth="1px" CellPadding="3"
CellSpacing="2" DataSourceID="SqlDataSource1">
<Columns>
<asp:CommandField ShowEditButton="True" />
</Columns>
<FooterStyle BackColor="#F7DFB5" ForeColor="#8C4510" />
<HeaderStyle BackColor="#A55129" Font-Bold="True" ForeColor="White" />
<PagerStyle ForeColor="#8C4510" HorizontalAlign="Center" />
<RowStyle BackColor="#FFF7E7" ForeColor="#8C4510" />
<SelectedRowStyle BackColor="#738A9C" Font-Bold="True" ForeColor="White" />
<SortedAscendingCellStyle BackColor="#FFF1D4" />
<SortedAscendingHeaderStyle BackColor="#B95C30" />
<SortedDescendingCellStyle BackColor="#F1E5CE" />
<SortedDescendingHeaderStyle BackColor="#93451F" />
</asp:GridView>
<asp:GridView ID="GridView1" runat="server" AutoGenerateEditButton="true"
EmptyDataText="No results found" BackColor="#DEBA84" BorderColor="#DEBA84"
BorderStyle="None" BorderWidth="1px" CellPadding="3" CellSpacing="2"
AllowSorting="True" AutoGenerateColumns="True">
<FooterStyle BackColor="#F7DFB5" ForeColor="#8C4510" />
<HeaderStyle BackColor="#A55129" Font-Bold="True" ForeColor="White" />
<PagerStyle ForeColor="#8C4510" HorizontalAlign="Center" />
<RowStyle BackColor="#FFF7E7" ForeColor="#8C4510" />
<SelectedRowStyle BackColor="#738A9C" Font-Bold="True" ForeColor="White" />
<SortedAscendingCellStyle BackColor="#FFF1D4" />
<SortedAscendingHeaderStyle BackColor="#B95C30" />
<SortedDescendingCellStyle BackColor="#F1E5CE" />
<SortedDescendingHeaderStyle BackColor="#93451F" />
</asp:GridView>
Code-behind:
protected void btnSearch_Click(object sender, EventArgs e)
{
string domainToQueryFor = "domain";
string pinToQueryFor = "account";
DBConnectionlib.DBClass dbReader = new DBConnectionlib.DBClass();
dbReader.connectionInformation = #"Server=tcp:XXXXXXXXX,1433 ;Database=" + databaseName + ";Trusted_Connection=false;UID=" + databaseUserName + ";Pwd=" + databasePassword + "; ApplicationIntent=ReadWrite;Timeout=60;MultiSubnetFailover=True";
dbReader.tableName = tableName;
string currentSqlQuery = "select * from " + dbReader.tableName + " WHERE domain like '" + domainToQueryFor + "' and pin like '" + pinToQueryFor + "'";
dbReader.queryStatement = currentSqlQuery;
List<string> results = dbReader.readFromSqlDatabaseReturnList();
DataTable dt = createDataTable(results);
GridView1.DataSource = dt;
GridView1.DataBind();
}

Answer 1

I had to add this to get it to portray dynamically
foreach (System.Data.DataColumn item in dt.Columns)
{
BoundField nameColumn = new BoundField();
nameColumn.DataField = item.ColumnName;
nameColumn.HeaderText = item.ColumnName;
GridView1.Columns.Add(nameColumn);
}
Basically without the column names explicitly stated/added, the gridview will not display. They could probably also be hard coded in the html code with a <%bind%> command, but I wanted it more dynamic so I did it the above way.