Fetching value into textbox from database using WCF in VB.NET
This article is all about how you will fetch value into textbox using WCF services.
Introduction: How we fetch values into textbox from database using WCF Service.
In this article, you will learn how to fetch values into two or more textboxes from a database which have any no. of records using the WCF Services into a client application.
Step 1: Open visual studio and click on file menu.
- Go to new -> project.
- New project dialog box will appear.
- Select WCF -> WCF Service Application.
- Give the name as you desire.
- Press ok as shown below on figure:
Step 2: Go to solution explorer.
- open the Iservice1.vb.
- write a code like:
' NOTE: You can use the "Rename" command on the "Refactor" menu to change the interface name "IService1" in both code and config file together.
Public Interface IService1
Function show() As DataSet
' TODO: Add your service operations here
Step 3: Now, open the Service1.svc.vb.
' NOTE: You can use the "Rename" command on the "Refactor" menu to change the class name "Service1" in code, svc and config file together.
Public Class Service1
Public Function show() As DataSet
Dim da As New SqlDataAdapter("select * from employee", "database=vinit;server=.;uid=sa;pwd=wintellect")
Dim ds As New DataSet()
Step 4: Start Debugging by pressing F5.
Step 5: Open the visual studio and go to the file menu.
Step 6: Go to Solution Explorer.
Right click on 'References' and select 'Add Service Reference...'
'Add Service Reference' dialog box will appear.
Paste the address which is copied in step 4.
Press OK button.
Step 7: Now, take controls on Form design as shown in the figure:
Partial Public Class Form1
Public Sub New()
Private i As Integer = 0
Private Sub button1_Click(sender As Object, e As EventArgs)
Dim obj As New ServiceReference1.Service1Client()
textBox1.Text = obj.show().Tables(0).Rows(i)(0).ToString()
textBox2.Text = obj.show().Tables(0).Rows(i)(1).ToString()
i += 1
Catch generatedExceptionName As Exception
MessageBox.Show("record has finished")
Step 8: Now we press F5 and run this application and result shows like figure below: