How To Display Message In Textbox If The Selected Record Cannot Be Found In Database

Dec 16, 2010

i m doing when i enter travel id in textbox1 and click on button1 then in textbox2 i retrieve the travel agency name according to the travel id i entered in textbox1, I want when no record is found according to the travel id i entered in textbox1 then in textbox2 it shows the message no record found ...this is coding i use to retrieve record in textbox2 by enter travel id in textbox1 : have a look ...

Protected Sub Button4_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button4.Click
Dim SQLData As New System.Data.SqlClient.SqlConnection("Data Source=.SQLEXPRESS;AttachDbFilename=|DataDirectory|ASPNETDB.MDF;Integrated Security=True;User Instance=True")
Dim cmdSelect As New System.Data.SqlClient.SqlCommand("SELECT * FROM a1_vendors WHERE VendorId ='" & TextBox1.Text & "'", SQLData)
SQLData.Open()
Dim dtrReader As System.Data.SqlClient.SqlDataReader = cmdSelect.ExecuteReader()
[code]...

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