How to search multiple record from table

Question

1.00/5 (1 vote)

See more:

How to search multiple records in single text box sepeerated with comma from table and display in grid view using asp.net and vb.net i prepare the code for to display in grid view but i can display only one record at a time i want to display more than one record can anyone help me in this.Below is the existing code

What I have tried:

VB

If txtReferenceNo.Text <> "" Then
            If filter.Trim() = "" Then
                filter = " WHERE ReferenceNo ='" & txtReferenceNo.Text & "'"
            Else
                filter = filter & " AND ReferenceNo ='" & txtReferenceNo.Text & "'"
End if 
End if

Posted 12-May-16 16:59pm

saisupraja

Updated 13-May-16 4:10am

v2

Add a Solution

3 solutions

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Sergey Alexandrovich Kryukov · Answer 1 · 2016-05-12T18:04:00

Your approach is wrong from the very beginning. The query composed by concatenation with strings taken from UI. Not only repeated string concatenation is inefficient (because strings are immutable; do I have to explain why it makes repeated concatenation bad?), but there is way more important issue: it opens the doors to a well-known exploit called SQL injection.

This is how it works: http://xkcd.com/327.

Are you getting the idea? The string taken from a control can be anything, including… a fragment of SQL code.

What to do? Just read about this problem and the main remedy: parametrized statements: http://en.wikipedia.org/wiki/SQL_injection.

With ADO.NET, use this: http://msdn.microsoft.com/en-us/library/ff648339.aspx.

Please see my past answers for some more detail:
EROR IN UPATE in com.ExecuteNonQuery();,
hi name is not displaying in name?.

Now, "search multiple record from table"… is not even a topic. This is a matter of such thing called SQL… :-)

—SA

Karthik_Mahalingam · Answer 2 · 2016-05-13T04:10:00

if you are forming the dynamic query in the vb code, ensure that you have taken measures to prevent SQL Injection[^]
refer the below links if you are really care about your application to prevet attacks
sql server - Parameterize an SQL IN clause - Stack Overflow[^]
How to pass sqlparameter to IN()? - Stack Overflow[^]

VB

Dim Filter As String = " Select * from TableName "
       Dim inQuery As String = ""
       Dim csvRefNo As String = txtReferenceNo.Text.Trim.TrimEnd(",").TrimStart(",")
       If Not String.IsNullOrWhiteSpace(csvRefNo) Then
           Dim refNos() As String = csvRefNo.Split(New String() {","}, StringSplitOptions.RemoveEmptyEntries)
           For Each refNo As String In refNos
               inQuery = (inQuery + String.Format("'{0}',", refNo.Replace("'", "")))
           Next
           inQuery = inQuery.Trim.TrimEnd(",")
           inQuery = " where ReferenceNo IN ( " + inQuery + " )"
       End If

       Filter = (Filter + inQuery)

hiren soni · Answer 3 · 2016-05-12T21:13:00

Solution 2

If you want to pass comma separated then in your case instead of

ReferenceNo ='" & txtReferenceNo.Text & "'"

you should use

ReferenceNo IN  ('" & txtReferenceNo.Text & "')"

Posted 12-May-16 21:13pm

hiren soni

Comments

saisupraja 13-May-16 3:17am

Where to add this is this in first filter or second filter ?? i added in both the filters it doesnt show anything

How to search multiple record from table

3 solutions

Solution 1

Solution 3

Solution 2

Add your solution here

Preview 0