Search multiple results from database and display in single textbox - vb.net

Question

guys i want to build an efficient searching tool in vb to search data from my database in mysql where i have stored paragraphs of some information. i want the search to return multiple results like google does but in a textbox in the form of 2-3 paragraphs of the same concept.Also to make the search more efficient i want to include the substring feature that is the % sign in the select query. can anyone tell me how to implement these two features ? here is my basic search code that returns just a single paragraph stored in the table into my result textbox that i hide first and then show when the results appear.
If TextBox1.Text = "" Then
MsgBox("Please Enter a Keyword")
Else
Dim conn As MySqlConnection
conn = New MySqlConnection
conn.ConnectionString = "Server=localhost;UserID=root;Password=admin674;Database=db1"
Dim myadapter As New MySqlDataAdapter
conn.Open()
Dim sqlquery = "select text from text where name like '" & TextBox1.Text & "'"
Dim mycommand As New MySqlCommand
mycommand.Connection = conn
mycommand.CommandText = sqlquery
myadapter.SelectCommand = mycommand
Dim mydata As MySqlDataReader
mydata = mycommand.ExecuteReader
If mydata.HasRows = 0 Then
MsgBox("Data Not Found")
TextBox1.Clear()
TextBox2.Clear()
Else
mydata.Read()
TextBox2.Text = mydata.Item("text")
TextBox2.Show()
End If

Answer 1

You already answered one question yourself - how to do a substring search, simple add % to your query:
Dim sqlquery = "select text from text where name like '%" & TextBox1.Text & "%'"
(ideally, instead of supplying search value in-line you would use parametrized query, which, among other things would help avoid SQL Injection.
As for the second part - you are already using DataReader, all you have to do is instead using a single mydata.Read() command - loop thru all its results. Replace
mydata.Read()
TextBox2.Text = mydata.Item("text")
TextBox2.Show()
with
Dim sb as New StringBuilder()
While mydata.Read()
sb.AppendLine(mydata("text"))
End While
TextBox2.Text = sb.ToString()
TextBox2.Show()
This approach uses StringBuilder class which is an efficient way to concatenate multiple strings.
P.S. Don't forget to close your DataReader and Connection after use.