Get a CheckBox to command a GridView row - asp.net

Question

I have a GridView holding my order table (these are inserted values from an insert statement). The order table appears on the doctor page, but I want to add to it so it can be approve/unapproved (if checked then update the 'Approve' column to approved, if not checked update the 'Approve' column to not approved. I need to add a CheckBox column to the GridView for this. This is part of my learning (not a live website).
How do I add a column of check boxes to a GridView that would set a row to approve/unapproved when checked?
This is my order table -(all the data is dummy data)
Grid:
<asp:GridView ID="GridViewdoc" runat="server" >
</asp:GridView>
Showing the data on the grid
Protected Sub Page_Load(sender As Object, e As EventArgs) Handles Me.Load
If Not IsPostBack Then
Dim conn As New System.Data.SqlClient.SqlConnection("Data Source=(LocalDB)\v11.0;AttachDbFilename=|DataDirectory|\surgerydb.mdf;Integrated Security=True;Connect Timeout=30")
Dim cmd3string As String = " Select * From alltheview WHERE DoctorId = " & Session("DoctorId")
Dim dt As New System.Data.DataTable()
Dim da As New System.Data.SqlClient.SqlDataAdapter(cmd3string, conn)
conn.Open()
da.Fill(dt)
conn.Close()
GridViewdoc.DataSource = dt
GridViewdoc.DataBind()
End If
End Sub
My select statement that pulls the data:
Create View theallview
As
Select A.OrderID
,A.PatientId ,B.Forename,B.Surname ,A.MedicineId ,C.Name as MedicineName ,E.Name as DoctorName, A.PharmacyId ,D.pharmname ,A.DoctorId ,A.Dateordered, Approved
From order_pres A
Left Join Patient B on (A.PatientId = B.PatientId)
Left Join Medicine C on (A.MedicineId = C.MedicineId)
Left Join pharmacy D on (A.PharmacyId = D.PharmacyId)
Left Join Doctor E on (A.DoctorId = E.DoctorId)
How the order table now looks (this is all dummy data by the way:
A button . click event will then submit the checked values
If anyone needs more information regarding this question please let me know.

Answer 1

Try this. It's in C# but you should be able to work out the VB.Net pretty easily.
As an aside I would put your code to load your data in its own method. Once the approved is updated I would recommend reloading your grid view.
ASPX:
<asp:GridView ID="GridViewdoc" DataKeyNames="OrderId" AutoGenerateColumns="false" runat="server">
<Columns>
<asp:BoundField HeaderText ="Order Id" DataField="OrderId" />
<asp:BoundField HeaderText ="Patient Id" DataField="PatientId" />
<asp:BoundField HeaderText ="Medicine Id" DataField="MedicineId" />
<asp:BoundField HeaderText ="Pharmacy Id" DataField="PharmacyId" />
<asp:BoundField HeaderText ="Doctor Id" DataField="DoctorId" />
<asp:BoundField HeaderText ="Date Ordered" DataField="Dateordered" />
<asp:TemplateField HeaderText="Approve/Unapprove">
<ItemTemplate>
<asp:CheckBox ID="chkApproved" AutoPostBack="true" Checked='<%# Eval("Approved") == null || Eval("Approved") == DBNull.Value ? false : Eval("Approved") %>' runat="server" OnCheckedChanged="chkApproved_CheckedChanged" />
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
Code behind:
protected void chkApproved_CheckedChanged(object sender, EventArgs e)
{
CheckBox chkApproved = (CheckBox)sender;
GridViewRow gridViewRow = (GridViewRow)chkApproved.Parent.Parent;
int orderID = (int)GridViewdoc.DataKeys[gridViewRow.RowIndex].Value;
bool approved = chkApproved.Checked;
//Your update method
UpdateApproved(orderID, approved);
//Your data load method
LoadData();
}