Isolated Storage in ASP.NET

Posted by Naimishforu under ASP.NET on 2/7/2011 | Points: 10 | Views : 2803 | Status : [Member] [MVP] | Replies : 0

I am trying to stroe data in Isolated Storage, but because of "some reason" it's storing only below value in xml file.

<NewDataSet />

Please find the below code,

    Protected Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button1.Click
ds = New DataSet()
dt = New DataTable()

' Declare your Columns - for brevity sake I went with the LameO
' constructors, but you can (and should) get more specific
Dim LastName As DataColumn
Dim FirstName As DataColumn
Dim WT As DataColumn
Dim Desc As DataColumn

' Initialize the columns
LastName = New DataColumn(TextBox2.Text)
FirstName = New DataColumn(TextBox1.Text)
WT = New DataColumn("WT")
Desc = New DataColumn("Desc")

' Add them to your DataTable

' Add the DataTable to your DataSet
End Sub
Friend Function WriteInIS(ByVal ds As DataSet) As DataSet

'Dim isoStore As IsolatedStorageFile
isoStore = IsolatedStorageFile.GetStore(IsolatedStorageScope.User Or _
IsolatedStorageScope.Assembly Or IsolatedStorageScope.Domain, Nothing, Nothing)

'This line will create the directory. If directory already exists it will simply be ignore and no exception would be raised
isoStore.CreateDirectory(String.Format("{0}\{1}", FOLDER_PATH, SUB_FOLDER_PATH))

'This block of code will open the file, write the DataSet xml into it and then save.
Using writer =
New StreamWriter(
New IsolatedStorageFileStream(
String.Format("{0}\{1}\{2}", FOLDER_PATH, SUB_FOLDER_PATH, FILE_NAME), FileMode.Create, FileAccess.Write, isoStore))

End Using

End Function

What could be the problem?


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