Hi
I need to update a checkboxlist on a web page from a sql database.
I have 3 tables:
Dogs Table:
DogID - primary Key
DogName,
DogSex, etc.
Breeds Table:
DogBreedID - primary Key
Breed (Irish Terrier, Great Dane, etc)
Then because a dog can be more than one breed (mixed), one more table between the Dogs and Breeds tables that contains DogID from Dogs table and DogBreedID from Breeds table, along with primary key Dog_BreedID.
Dog_Breed Table:
Dog_BreedID - primary Key
FKDogID - links to Dogs table
FKDogBreedID - links to Breeds table
When the user updates a particular Dogs information, I need to have the checkboxlist populated with all the dog breeds from the Breeds table, which it does, but also I need the breeds that belong to that particular dog - checked, in case user wishes to change the breeds of the dog.
No problem with listing all the breeds.
Problem comes in when I try to compare the DogBreedID in the checkboxlist to the Dogs breeds that I select in the Reader.
Can not get value of the DogBreedID in the checkboxlist.
Here is code trying to use for this:
Code: Checkboxlist populated with all the dog breeds from Breeds table
Code: that is suppose to get the dog being updated breeds checked in the checkboxlist:
Thanks in advance for any help
Cindy
I need to update a checkboxlist on a web page from a sql database.
I have 3 tables:
Dogs Table:
DogID - primary Key
DogName,
DogSex, etc.
Breeds Table:
DogBreedID - primary Key
Breed (Irish Terrier, Great Dane, etc)
Then because a dog can be more than one breed (mixed), one more table between the Dogs and Breeds tables that contains DogID from Dogs table and DogBreedID from Breeds table, along with primary key Dog_BreedID.
Dog_Breed Table:
Dog_BreedID - primary Key
FKDogID - links to Dogs table
FKDogBreedID - links to Breeds table
When the user updates a particular Dogs information, I need to have the checkboxlist populated with all the dog breeds from the Breeds table, which it does, but also I need the breeds that belong to that particular dog - checked, in case user wishes to change the breeds of the dog.
No problem with listing all the breeds.
Problem comes in when I try to compare the DogBreedID in the checkboxlist to the Dogs breeds that I select in the Reader.
Can not get value of the DogBreedID in the checkboxlist.
Here is code trying to use for this:
Code: Checkboxlist populated with all the dog breeds from Breeds table
Code:
<asp:CheckBoxList ID="CheckBoxList1" runat="server"
DataSourceID="SqlDataSource1" DataTextField="Breed" DataValueField="DogBreedID"
RepeatColumns="4">
</asp:CheckBoxList>
<asp:SqlDataSource ID="SqlDataSource1" runat="server"
ConnectionString="<%$ ConnectionStrings:myConnectionString5 %>"
SelectCommand="SELECT [DogBreedID], [Breed] FROM [DogBreeds] ORDER BY [DogBreedID]">
</asp:SqlDataSource>Code:
Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
If Not IsPostBack Then
Dim vDogID = 44
PopulateBreeds(vDogID)
End If
End Sub
Private Sub PopulateBreeds(ByVal vDogID As Integer)
Dim conn As SqlConnection = Dogs.MyConnection
Dim cmd As New SqlCommand()
' Getting the DogBreedIDs for the particular Dog.
cmd.CommandText = "select DogBreeds.DogBreedID, Breed FROM Dog_DogBreeds INNER JOIN DogBreeds ON Dog_DogBreeds.FKDogBreedID = DogBreeds.DogBreedID INNER JOIN Dogs ON Dog_DogBreeds.FKDogID = Dogs.DogID WHERE dogs.DogID = " & vDogID & ""
cmd.Connection = conn
conn.Open()
Dim reader As SqlDataReader = cmd.ExecuteReader()
' The next line is not working - how do I get the DogBreedID from the checkboxlist1 so
' I can compare it to the readers DogBreedID from the above select statement?
Dim chk1 As CheckBoxList = CType(Me.FindControl("CheckBoxList1"), CheckBoxList)
Dim num As Integer = (chk1.Items.Count) - 1
While reader.Read
' I know the connection and reader are working cause I can see the DogBreedID in the
' vDogBreedID variable in next line.
Dim vDogBreedID = reader.GetValue(0)
Dim i As Integer
For i = 0 To num
' Comparing the DogBreedID in reader to the DogBreedID in the CheckBoxList1 and if equal
' mark as checked.
If reader(0) = chk1.Items(i).Value Then
chk1.Items(i).Selected = True
End If
Next
End While
End SubCindy