How to use if condtion

Question

Using VB.Net and SQL Server

I want to compare the textbox value with table row value by using if condition

Code

If textbox1.text = cmd
cmd = New SqlCommand("Select name from table1", con) Then
cmd.ExecuteNonQuery()

cmd = SqlCommand

The above code is showing error in if condition. I don't know how to compare the textbox value with table row value by using if condition.

What is the proper way to use if condition.

Answer 1

It seems like you're trying to compare a textbox to a database value. You need to retrieve the value from the database first.

cmd = New SqlCommand("Select name from table1", con)
Name = cmd.ExecuteScalar()

If textbox1.Text.Equals(Name) Then
   ... do something

Edit If you want to match against multiple names, it's probably best to put it as a sql query

Dim Name as object

cmd = New SqlCommand("Select top 1 name from table1 where name = @name", con)
cmd.Parameters.AddWithValue("@name", textbox1.Text);
Name = cmd.ExecuteScalar()

if Name = textbox1.Text Then
    ... do something