use sql dataAdapter to get data

Check out these solutions above you will find how to use it.
Just an experience to add is:
- Do not pass variables directly into the query string, like:

C#

SqlCommand command = new SqlCommand("SELECT * FROM users WHERE Username =  " + user + " AND Password = " + password, connection);

- Please use: Parameters Add or AddWithValue to pass variables so that you will never get into troubles while execute query.

To tell the differences between these 2 methods, pleas check this

Posted 10-Aug-14 18:33pm

Trung Nguyen Son

Updated 10-Aug-14 20:40pm

v4

Solution 5

why do you want to use sql command and sql adapter together? you can use anyone of them to get your result.
If in case with "sql command" you mean "sql query" then here you go.

I usually use this

SqlConnection conn = new SqlConnection();
       conn.ConnectionString = connStr;
       SqlDataAdapter da = new SqlDataAdapter("sqlquery", conn);
       DataSet ds = new DataSet();
       da.Fill(ds);
       if (ds.Tables[0].Rows.Count != null)
       {
           TextBox1.Text = ds.Tables[0].Rows[0][0].ToString();
       }

it will give you first column of first row in dataset. :)

Posted 10-Aug-14 22:10pm

Ashi0891

Updated 10-Aug-14 22:14pm

v2

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)

Abhinav S · Accepted Answer · 2014-08-10T18:15:00

Solution 1

Try

conn.Open();
myCommnd.ExecuteScalar();
SqlDataAdapter da = new SqlDataAdapter(myCommnd);
DataTable dt = new DataTable();
da.Fill(dt);
textBox1.Text = dt.Rows[0].ItemArray[0].ToString();

Posted 10-Aug-14 18:15pm

Abhinav S