plause/sleep my thread

hi all

on my start button ive got it running a sub in a new thread

VB Code:

Dim t As New Thread(AddressOf ObjSearch.PrimaryYellSearch)
                t.Name = "YellPrimarySearch"
                t.IsBackground = True
                t.Start()

ive got another button which is my plause/resume button but how do i plause/sleep the thread when its been clicked????

VB Code:

Dim t As Thread
        Try
 
            If Me.btnManage.Text = "Plause" Then
                Me.btnManage.Text = "Resume"
                t.Sleep(True)
                Me.btnManage.Update()
            Else
                Me.btnManage.Text = "Plause"
                t.Sleep(False)
                Me.btnManage.Update()
            End If
 
        Catch ex As Exception
            MsgBox(ex.ToString, MsgBoxStyle.Critical, "Application Error")
        End Try