How can I Read only particular rows from table

Question

0.00/5 (No votes)

See more:

C#

List<string> sList = new List<string>(); 
using (IDataReader _data = dal.ExecuteReader(command))
                       {
                         if(_data !=null)
                           {
                           while (_data.Read())
                           {
                              sList.Add(Convert.ToString(_data["Configkey"]));
}

//Configkey - column name
// slist will have all the rows from table column now I need only set of particular values. How can I get them.

Posted 5-Oct-15 4:28am

Tharakharish

Updated 5-Oct-15 4:34am

Naveen.Sanagasetti

v2

Add a Solution

1 solution

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)

Maciej Los · Answer 1 · 2015-10-05T04:46:00

Solution 1

Try this:

C#

DataTable dt = new DataTable();
dt.Load(dal.ExecuteReader(command));
var singleValue = dt.AsEnumerable()
    .Where(a=>a.Field<string>("ConfigKey")=="searchedValue")
    .SingleOrDefault();

For further informations, please see:
LINQ to DataSet[^]
LINQ to DataSet Examples[^]
Queries in LINQ to DataSet[^]

[EDIT]

If you can't upgrade your project to newer version of .net framework, use DataTable.Select[^] method.

More at: Filtering and Sorting Directly in Data Tables[^]

Posted 5-Oct-15 4:46am

Maciej Los

Updated 5-Oct-15 5:52am

v2

Comments

Tharakharish 5-Oct-15 11:45am

Thanks for solution,
I have a project solution which is built using .NET framework 2.0 so ASEnumaerable is not supported even the system.data.linq is not supported.so how can I write the linq, can you please provide different solution to achieve it.

Maciej Los 5-Oct-15 11:52am

See updated answer.

[no name] 5-Oct-15 12:18pm

My 5.

Maciej Los 5-Oct-15 12:37pm

Thank you, Bruno.