HenningF
asked on
ASP.NET rookieQ: 'MyDataGrid is not declared'
I have the following in the top of one of my .aspx-files:
--------------------------
<%@ Import Namespace="System" %>
<%@ Import Namespace="System.Configur
<%@ Import Namespace="System.Data" %>
<%@ Import Namespace="System.Data.Sql
<SCRIPT LANGUAGE="VB" RUNAT=server>
Sub Page_Load(Sender As Object, E As EventArgs)
Dim DS As DataSet
Dim MyConnection As SqlConnection
Dim MyCommand As SqlDataAdapter
MyConnection = New SqlConnection("connection"
MyCommand = New SqlDataAdapter("SELECT * FROM table", MyConnection)
DS = new DataSet()
MyCommand.Fill(ds, "kapittel")
MyDataGrid.DataSource=ds.T
Page.DataBind()
End Sub
</SCRIPT>
--------------------------
When I run this I get the error-message "BC30451: Name 'MyDataGrid' is not declared." and I have no idea how to solve it. This code is almost exactly the same as downloaded from the asp.net-website. I have tried to use Dim MyDataGrid AS ... but I haven't found the right arguments. The exact same code also works in one of my ascx-files...go figure...
HenningF
--------------------------
<%@ Import Namespace="System" %>
<%@ Import Namespace="System.Configur
<%@ Import Namespace="System.Data" %>
<%@ Import Namespace="System.Data.Sql
<SCRIPT LANGUAGE="VB" RUNAT=server>
Sub Page_Load(Sender As Object, E As EventArgs)
Dim DS As DataSet
Dim MyConnection As SqlConnection
Dim MyCommand As SqlDataAdapter
MyConnection = New SqlConnection("connection"
MyCommand = New SqlDataAdapter("SELECT * FROM table", MyConnection)
DS = new DataSet()
MyCommand.Fill(ds, "kapittel")
MyDataGrid.DataSource=ds.T
Page.DataBind()
End Sub
</SCRIPT>
--------------------------
When I run this I get the error-message "BC30451: Name 'MyDataGrid' is not declared." and I have no idea how to solve it. This code is almost exactly the same as downloaded from the asp.net-website. I have tried to use Dim MyDataGrid AS ... but I haven't found the right arguments. The exact same code also works in one of my ascx-files...go figure...
HenningF
You just need to rename your grid to 'MyDataGrid'. It's probably named DataGrid1 at the moment. Click it and select Properties to view it's name.
ASKER
OK, so what you are saying is that 'MyDataGrid' is some kind of reserved word? What if I want to have several different datagrids within the same page...?
My exact code at the moment looks like this:
--------------------------
Sub Page_Load(Sender As Object, E As EventArgs)
Dim DS1 As DataSet
Dim DS2 As DataSet
Dim MyConnection As SqlConnection
Dim MyCommand1 As SqlDataAdapter
Dim MyCommand2 As SqlDataAdapter
MyConnection = New SqlConnection("server=some
MyCommand1 = New SqlDataAdapter("SELECT * FROM table1", MyConnection)
MyCommand2 = New SqlDataAdapter("SELECT * FROM table2", MyConnection)
DS1 = new DataSet()
DS2 = new DataSet()
MyCommand1.Fill(ds1, "table1")
MyCommand2.Fill(ds2, "table1")
MyDataGrid1.DataSource=ds1
MyDataGrid2.DataSource=ds2
Page.DataBind()
End Sub
--------------------------
My exact code at the moment looks like this:
--------------------------
Sub Page_Load(Sender As Object, E As EventArgs)
Dim DS1 As DataSet
Dim DS2 As DataSet
Dim MyConnection As SqlConnection
Dim MyCommand1 As SqlDataAdapter
Dim MyCommand2 As SqlDataAdapter
MyConnection = New SqlConnection("server=some
MyCommand1 = New SqlDataAdapter("SELECT * FROM table1", MyConnection)
MyCommand2 = New SqlDataAdapter("SELECT * FROM table2", MyConnection)
DS1 = new DataSet()
DS2 = new DataSet()
MyCommand1.Fill(ds1, "table1")
MyCommand2.Fill(ds2, "table1")
MyDataGrid1.DataSource=ds1
MyDataGrid2.DataSource=ds2
Page.DataBind()
End Sub
--------------------------
ASKER
...a small typo in the 3rd line from the bottom, it should be "MyDataGrid2.DataSource=ds
No, I'm not saying that. I'm saying that your code was referring to a DataGrid which did not exist so was causing an error.
You have changed the code since you first asked the question - are you still having problems?
You have changed the code since you first asked the question - are you still having problems?
ASKER
It's actually the last code I'm using...I just modified it to keep you from reading all that much. It still doesn't work...
ASKER CERTIFIED SOLUTION
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what cdpmat said, is correct....
To make sure...show us where have you defined your variables MyDataGrid1, MyDataGrid2, ......etc.
do you have a line of code in your application that reads like..
Dim MyDataGrid1 As DataGrid
Or in ascx file do you have
<asp:DataGrid Runat=server ID="MyDataGrid1"></asp:Dat
To make sure...show us where have you defined your variables MyDataGrid1, MyDataGrid2, ......etc.
do you have a line of code in your application that reads like..
Dim MyDataGrid1 As DataGrid
Or in ascx file do you have
<asp:DataGrid Runat=server ID="MyDataGrid1"></asp:Dat
ASKER
I have a
<ASP:DROPDOWNLIST AUTOPOSTBACK="True" ID="MyDataGrid1" DATAVALUEFIELD="KapittelID
later on in my page (I don't use code-behind in this page). So maybe if I put something like Dim MyDataGrid1 As Dropdownlist it might work? I apologise for all this but I'm a total rookie, and I'm beginning to wonder if I should take a class on this instead of trying myself...
<ASP:DROPDOWNLIST AUTOPOSTBACK="True" ID="MyDataGrid1" DATAVALUEFIELD="KapittelID
later on in my page (I don't use code-behind in this page). So maybe if I put something like Dim MyDataGrid1 As Dropdownlist it might work? I apologise for all this but I'm a total rookie, and I'm beginning to wonder if I should take a class on this instead of trying myself...
A DropDownList control is totally different to a DataGrid control. Delete the dropdown and replace it with a DataGrid control. Make sure you name it MyDataGrid1.
ASKER
OK, it seems like I misunderstood this part, and I'm now looking more into how to make dropdownlists. I somehow got the idea that a DataGrid was a kind of "universal datastorage" and that I could use it in whatever manner I wanted. I see now that this is not the case, and you cdpMat will offcourse recieve the points for guiding me in the right direction.
Thanx,
HenningF
Thanx,
HenningF
A DataGrid is useful for displaying a table of data on a web page. You're probably thinking of a DataSet which temporarily holds tables of data to be used in controls. You can easily bind data to a drop down list control but you need to specify fields for the value and text etc.