Fetch Distinct values

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dear sir/ma'am

i have a data grid view with values like

coloumn1
1
2
3
1
1
3
5

sir i want the distict count in a text box
such that the answer i want to find as

distinct rows=4

Help me to do this directly from datagridview

sir values are in the datagrid view so how can i get distinct count

Posted 2-May-13 23:26pm

ankur789

Updated 3-May-13 17:02pm

v2

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TnTinMn · Answer 1 · 2013-05-05T06:11:00

Solution 3

You could do it with LINQ.

VB

Dim distinctCount As Int32 = From r In dgv1.Rows _
                             Let rw = CType(r, DataGridViewRow) _
                             Where Not rw.IsNewRow _
                             Select rw.Cells(0).Value _
                             Distinct.Count

Posted 5-May-13 6:11am

TnTinMn

Updated 5-May-13 6:15am

v2

pdoxtader · Answer 2 · 2013-05-03T02:37:00

You can also specify it in your SQL statement, like this:

VB

Using conn As New SqlConnection(SqlConnString)
    conn.Open()
    Using comm As New SqlCommand("SELECT Distinct [ItemNo] FROM [" & LiveDBName & "].[dbo].[Groups]", conn)
        Using reader As SqlDataReader = comm.ExecuteReader()
            theTable.Load(reader)
            conn.Close()
        End Using
    End Using
End Using

Amol_B · Answer 3 · 2013-05-02T23:55:00

Solution 1

Hi,

not sure about grid view ,but you can use grid data source to find distinct.

C#

dt = Grid.DataSource;
dt.DefaultView.ToTable(true, new string[] { "Column1" });

this will return rows with distinct values and you can get count from it

Posted 2-May-13 23:55pm

Amol_B

Updated 5-May-13 8:17am

v2

Comments

RaviRanjanKr 5-May-13 14:18pm

Always wrap your code in pre tag.

Amol_B 6-May-13 0:52am

Thanks.