How we have to Use Textbox in Ajax

[davidson1]

Hai friends,

I am doing project in ASP.NET(vb) , I have Installed the software Microsoft ASP.NET 2.0 AJAX Extensions

My Question is

I have 2 Textbox

Regno:- Textbox1
Name :- Textbox2

Whenever any student enter his regno , it automatically take his name from student table and display in textbox2 , As I am setting Autopostback=true the whole page Refreshes, I want only that 2 textbox alone refresh,

What I have to do That..............

I am Blank in Ajax..........

Pl help me............

Thanks in Advance...........

Davidson

Posted Date:- 29 Feb 2008

[acoder]

Since you're using AJAX.NET, this question will probably be better answered in the .NET forum. Moved from JavaScript forum.

Moderator.

[davidson1]

Hai friends,

I am doing project in ASP.NET(vb) , I have Installed the software Microsoft ASP.NET 2.0 AJAX Extensions

My Question is

I have 2 Textbox

Regno:- Textbox1
Name :- Textbox2

Whenever any student enter his regno , it automatically take his name from student table and display in textbox2 , As I am setting Autopostback=true the whole page Refreshes, I want only that 2 textbox alone refresh,

code as Follows written under Textbox1 Event:-

Dim cn As New System.Data.sqlclient.SqlConnection
Dim tbsid1 As String
Dim rd As sqlDataReader
Dim rd1 As sqlDataReader

cn.ConnectionString = "Persist Security Info=False;User ID=sa;Initial Catalog=master;password=david;"
cn.Open()

Dim cmd1 As New SqlCommand("select count(*) from Student where RegNo='" & textbox1.Text & "'", cn)
rd1 = cmd1.ExecuteReader
rd1.Read()
If rd1(0) = 0 Then
Label1.Text = "Invalid Regno"
Exit Sub
End If
rd1.Close()


Dim cmd As New SqlCommand("select StudentName from Student where RegNo='" & textbox1.Text & "'", cn)
rd = cmd.ExecuteReader
If rd.Read() Then
textbox2.Text = rd(0)
End If



What I have to do That..............

Anything I have link between Asp.net to Ajax

I am Blank in Ajax..........

Pl help me............

Thanks in Advance...........

Davidson

Posted Date:- 29 Feb 2008

[davidson1]

Hai friends,

I am doing project in ASP.NET(vb) , I have Installed the software Microsoft ASP.NET 2.0 AJAX Extensions

My Question is

I have 2 Textbox

Regno:- Textbox1
Name :- Textbox2

Whenever any student enter his regno , it automatically take his name from student table and display in textbox2 , As I am setting Autopostback=true the whole page Refreshes, I want only that 2 textbox alone refresh,

code as Follows written under Textbox1 Event:-

Dim cn As New System.Data.sqlclient.SqlConnection
Dim tbsid1 As String
Dim rd As sqlDataReader
Dim rd1 As sqlDataReader

cn.ConnectionString = "Persist Security Info=False;User ID=sa;Initial Catalog=master;password=david;"
cn.Open()

Dim cmd1 As New SqlCommand("select count(*) from Student where RegNo='" & textbox1.Text & "'", cn)
rd1 = cmd1.ExecuteReader
rd1.Read()
If rd1(0) = 0 Then
Label1.Text = "Invalid Regno"
Exit Sub
End If
rd1.Close()


Dim cmd As New SqlCommand("select StudentName from Student where RegNo='" & textbox1.Text & "'", cn)
rd = cmd.ExecuteReader
If rd.Read() Then
textbox2.Text = rd(0)
End If



What I have to do That..............

Anything I have link between Asp.net to Ajax

I am Blank in Ajax..........

Pl help me............

Thanks in Advance...........

Davidson

Posted Date:- 29 Feb 2008

--------------------------------------------------------------------------------

[Plater]

Threads merged.
Please stop double posting and read the Posting Guidelines under the "Help" menu.

MODERATOR