How to get data from the database and insert it into my combo box using C# Window Application Form?

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Hello everyone there.

I would like to know on how to get the data(GradeLevel) from my table (tblClass) and put it inside my combo box using C#. I am new about this language. Hoping anyone can help me :) Thanks in advance :)

Posted 29-Dec-14 0:39am

DarkDreamer08

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ridoy · Accepted Answer · 2014-12-29T01:09:00

Solution 1

In simple it could be like:

C#

using (SqlConnection sqlConnection = new SqlConnection("connstring"))
{
    SqlCommand sqlCmd = new SqlCommand("SELECT * FROM tblClass", sqlConnection);
    sqlConnection.Open();
    SqlDataReader sqlReader = sqlCmd.ExecuteReader();

    while (sqlReader.Read())
    {
        cbDoctor.Items.Add(sqlReader["name"].ToString());
    }

    sqlReader.Close();
}

Remember it's a format, not the whole code.Also see:
populate combo box in c#[^]

Posted 29-Dec-14 1:09am

ridoy

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ridoy 29-Dec-14 7:16am

Downvoters please leave a comment here, so that i can improve the solution and hence it can help the OP.

DarkDreamer08 29-Dec-14 7:39am

What do you mean by "name" at your code? is it the field name that I want to load at my combo box?

ridoy 29-Dec-14 7:42am

Yes that's a field name or property name of your database table that you want to load in your combobox.

DarkDreamer08 29-Dec-14 7:46am

Thank you! it is working!!! Hope you will help me again if I have another question to ask about C#. I am just a beginner here :) I think I will post another question later Haha XD Merry Christmas :)

ridoy 29-Dec-14 8:40am

welcome. feel free to ask about learning.Merry Christmas :)