how to retrieve data from database in c# windows application on button click and data will be display in respective textbox.

Question

2.50/5 (2 votes)

See more:

C#

private void button2_Click(object sender, EventArgs e)
{
   SqlConnection con = new SqlConnection("Data Source=ROHIT-PC\\SQLEXPRESS;Initial Catalog=FMS;Integrated Security=True");

   SqlCommand cmd = new SqlCommand("select * from JUNIOR_STUDENT where UID=@UID" + txtUid.Text.Trim() + "'", con);
   cmd.CommandType = CommandType.StoredProcedure;
   cmd.Parameters.AddWithValue("@UId", txtUid.Text);
   cmd.Parameters.AddWithValue("@NAME", txtName.Text);
   cmd.Parameters.AddWithValue("@ROLL_NO", txtRoll.Text);
   cmd.Parameters.AddWithValue("@STREAM", txtStream.Text);
   cmd.Parameters.AddWithValue("@GENDER", txtGender.Text);
   cmd.Parameters.AddWithValue("@YEAR_ID", cbxYearname.Text);
   cmd.Parameters.AddWithValue("@REMARKS", txtRemarks.Text);
   cmd.Parameters.AddWithValue("@ADMISSION_DATE", mtxtAdmsndate.Text);
   cmd.Parameters.AddWithValue("@ACADEMIC_YEAR", txtAcademicYear.Text);
   cmd.Parameters.AddWithValue("@ADMISSION_TYPE", txtAdmissiontype.Text);
   cmd.Parameters.AddWithValue("@CATEGORY_ID", cbxCategory.Text);
   cmd.Parameters.AddWithValue("@SUB_CATEGORY", txtName.Text);
   cmd.Connection = con;
   con.Open();

   SqlDataReader reader = cmd.ExecuteReader();
   while (reader.Read())
   {
      txtName.Text = reader["NAME"].ToString();
      txtRoll.Text = reader["ROLL_NO"].ToString();
      txtStream.Text = reader["STREAM"].ToString();
      txtGender.Text = reader["GENDER"].ToString();
      cbxYearname.Text = reader["YEAR_ID"].ToString();
      txtRemarks.Text = reader["REMARKS"].ToString();
      mtxtAdmsndate.Text = reader["ADMISSION_DATE"].ToString();
      txtAcademicYear.Text = reader["ACADEMIC_YEAR"].ToString();
      txtAdmissiontype.Text = reader["ADMISSION_TYPE"].ToString();
      cbxCategory.Text = reader["CATEGORY_ID"].ToString();
      txtSubcategory.Text = reader["SUB_CATEGORY"].ToString();

      reader.Close();
      con.Close();
      MessageBox.Show("Student : " + txtName.Text + " Transfer of Subject Successfull ", "Student Information", MessageBoxButtons.OK, MessageBoxIcon.Information);
   }
}

it gives me Could not find stored procedure error

Posted 13-May-14 4:41am

Member 10794814

Updated 13-May-14 5:09am

Nelek

v3

Add a Solution

Comments

Vi(ky 13-May-14 10:48am

what are you doing dear. You can simply execute "Select * From MyTable" query to get data and fill DataTable using SqlDataAdapter. see here
http://www.dotnetperls.com/sqldataadapter

[no name] 13-May-14 12:23pm

Your query is wrong. What do you think "UID=@UID" + txtUid.Text.Trim() + "'" is going to do for you? And if you are calling a stored procedure, why do you need a query?

2 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)

DamithSL · Accepted Answer · 2014-05-13T06:08:00

try with below

C#

using(SqlConnection con = new SqlConnection("Data Source=ROHIT-PC\\SQLEXPRESS;Initial Catalog=FMS;Integrated Security=True"))
using(SqlCommand cmd = new SqlCommand("select * from JUNIOR_STUDENT where UID=@UID", con))
{
    cmd.Parameters.AddWithValue("@UId", txtUid.Text);
    con.Open();
    using(SqlDataReader reader = cmd.ExecuteReader())
    {
        if (reader.Read())
        {
            txtName.Text = reader["NAME"].ToString();
            txtRoll.Text = reader["ROLL_NO"].ToString();
            txtStream.Text = reader["STREAM"].ToString();
            txtGender.Text = reader["GENDER"].ToString();
            cbxYearname.Text = reader["YEAR_ID"].ToString();
            txtRemarks.Text = reader["REMARKS"].ToString();
            mtxtAdmsndate.Text = reader["ADMISSION_DATE"].ToString();
            txtAcademicYear.Text = reader["ACADEMIC_YEAR"].ToString();
            txtAdmissiontype.Text = reader["ADMISSION_TYPE"].ToString();
            cbxCategory.Text = reader["CATEGORY_ID"].ToString();
            txtSubcategory.Text = reader["SUB_CATEGORY"].ToString();
        }
    }
}

Tadit Dash (ତଡିତ୍ କୁମାର ଦାଶ) · Accepted Answer · 2014-05-13T06:34:00

That is because you have declared CommandType as StoredProcedure, but did not define the Stored Procedure Name inside the Command.

C#

SqlCommand cmd = new SqlCommand("select * from JUNIOR_STUDENT where UID=@UID" + txtUid.Text.Trim() + "'", con);

You should provide the Stored Procedure Name here like...

C#

SqlCommand cmd = new SqlCommand("YoutStoredProcedureNameHere", con);

If you don't have a Stored Procedure, then delete the below lines...

C#

cmd.CommandType = CommandType.StoredProcedure;
cmd.Parameters.AddWithValue("@NAME", txtName.Text);
cmd.Parameters.AddWithValue("@ROLL_NO", txtRoll.Text);
cmd.Parameters.AddWithValue("@STREAM", txtStream.Text);
cmd.Parameters.AddWithValue("@GENDER", txtGender.Text);
cmd.Parameters.AddWithValue("@YEAR_ID", cbxYearname.Text);
cmd.Parameters.AddWithValue("@REMARKS", txtRemarks.Text);
cmd.Parameters.AddWithValue("@ADMISSION_DATE", mtxtAdmsndate.Text);
cmd.Parameters.AddWithValue("@ACADEMIC_YEAR", txtAcademicYear.Text);
cmd.Parameters.AddWithValue("@ADMISSION_TYPE", txtAdmissiontype.Text);
cmd.Parameters.AddWithValue("@CATEGORY_ID", cbxCategory.Text);
cmd.Parameters.AddWithValue("@SUB_CATEGORY", txtName.Text);

Only you need to pass the UID parameter...

C#

cmd.Parameters.AddWithValue("@UId", txtUid.Text);

how to retrieve data from database in c# windows application on button click and data will be display in respective textbox.

2 solutions

Solution 1

Solution 2

Add your solution here

Preview 0