I want to select columns from tables not null

Question

1.00/5 (1 vote)

See more:

i want to show tables columns values where field not null i mean i dont want to show null values on formload

What I have tried:

C#

connection.Open();
                DataSet dsa = new DataSet();
                DataTable dt = new DataTable();
                dsa.Tables.Add(dt);
                OleDbDataAdapter da = new OleDbDataAdapter();
                da = new OleDbDataAdapter("SELECT [Order Status] from [Contacts]", connection);
                da.Fill(dt);
                order1.DataSource = dt;
                order1.DisplayMember = "Order Status";
                connection.Close();

Posted 13-Oct-16 11:15am

Member 9983063

Updated 17-Oct-16 23:55pm

Add a Solution

3 solutions

Solution 2

try this

C#

dt.AsEnumerable().ToList().ForEach(row=>
            { if (string.IsNullOrWhiteSpace(Convert.ToString(row[0]))) row.Delete(); });
           dt.AcceptChanges();

Posted 17-Oct-16 23:55pm

Karthik_Mahalingam

Solution 3

HI,

Try the following query.See if it helps:

SELECT [Order Status] from [Contacts] where [Order Status] Not NULL or  [Order Status] != ''

Posted 28-Oct-16 1:43am

Harpreet05Kaur

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)

#realJSOP · Accepted Answer · 2016-10-13T11:32:00

Solution 1

Where [order status] is not null

Posted 13-Oct-16 11:32am

#realJSOP

Comments

Member 9983063 13-Oct-16 17:48pm

it's not working showing null