Checking matching value and display at gridview - asp.net

Question

I have list of all days in a month (as GridView header) refer to which month is selected by user which then be displayed in GridView.
Display list of Days in a month
Dim dt As New DataTable
Dim col As New DataColumn
dt.Columns.AddRange(New DataColumn(0) {New DataColumn("Date")})
For i As Integer = 1 To gsTotalDD 'gsTotalDD is total of days in a month
dt.Columns.Add(i)
Next
dt.Rows.Add("Status")
gvRptStatus.DataSource = dt
gvRptStatus.DataBind()
I had a table named tblUpload inside the database which storing data that been uploaded together with date of data uploaded.
What I am trying to do is looping through all the header value (list of days) and check either there is day matching with the date of data uploaded. When there is matching value, the status row on the code dt.Rows.Add("Status") will show status done and leave cell empty if no matching days found.
Example : GridView date (fist row), second header column is 1 and check with database has matching value or not. If yes then on (second row) status, at second column will display done.
EDIT
So I came up with checking the matching value like this :
Dim lCnn As New SqlConnection(gsConnString)
Dim lCmd As New SqlCommand
Dim lsCmd As String
Dim dt As New DataTable
Dim newDt As New DataTable
Dim sda As New SqlDataAdapter
Dim dtrow As DataRow = newDt.NewRow()
lCnn.Open()
lCmd.Connection = lCnn
lsCmd = "SELECT DISTINCT DATEPART (d, [date])"
lsCmd &= " FROM dbUpload..tblUpload"
lCmd.CommandText = lsCmd
sda.SelectCommand = lCmd
sda.Fill(newDt)
dt.Columns.AddRange(New DataColumn(0) {New DataColumn("Date")})
For i As Integer = 1 To gsTotalDD 'gsTotalDD is total of days in a month
dt.Columns.Add(i)
value2 = i
For Each col As DataColumn In newDt.Columns
value = newDt.Rows(i - 1).Item(col)
If value = value2 Then
MsgBox("Same value")
End If
Next
Next
By doing this, I manage to check the value but it's not the right way to do it since I wanted to set the status as done if got matching value or leave status empty if vice versa.
Thank you.