Databases
StackOverflow2013
Postsdbo
PORetrieving data from SQL server 2008r2 using winforms
 

Note that there are some explanatory texts on larger screens.

plurals
  1. PORetrieving data from SQL server 2008r2 using winforms
    primarykey
    data
    text
    <p>I am creating a c# windows form app, which will retrieve the data from a DB that is already created in sql server2008r2. There are 2 win forms in my app, 1st one is for getting the login details, the 2nd one is for display the data that are relevant to given UserID &amp; Password. I can't get the data to my 2nd form. This is my code:</p> <p><em><strong></em>**<em>*</em>****</strong><em>1st form</em><strong><em>*</em>**<em>*</em></strong></p> <pre><code> public partial class FormLog_in : Form { SqlConnection con = new SqlConnection("Data source=CHINTHAK-PC ; Initial Catalog=FlintecTest; Integrated Security = yes;"); SqlDataAdapter da = new SqlDataAdapter(); SqlCommand cmd = new SqlCommand(); public FormLog_in() { InitializeComponent(); } private void btnLogIn_Click(object sender, EventArgs e) { if (!(string.IsNullOrEmpty(txtUserName.Text)) &amp;&amp; !(string.IsNullOrEmpty(txtPassword.Text))) { con.Open(); string query = "SELECT count(*) FROM LogIn WHERE UesrName=@1 AND PassWord=@2 "; cmd = new SqlCommand(query, con); cmd.Parameters.Add("@1", SqlDbType.NVarChar).Value = txtUserName.Text; cmd.Parameters.Add("@2", SqlDbType.NVarChar).Value = txtPassword.Text; int count = Convert.ToInt32(cmd.ExecuteScalar()); con.Close(); if (count &gt; 0) { MessageBox.Show("Valid Username and Password"); Welcome f1 = new Welcome(); f1.Show(); } else MessageBox.Show("Invalid Username or Password try again"); } </code></pre> <p><strong><em>*</em>****</strong><em>2nd form</em><strong><em>*</em>*</strong></p> <pre><code>public partial class Welcome : Form { string query = null; SqlConnection con = new SqlConnection("Data source=CHINTHAK-PC ; Initial Catalog=FlintecTest; Integrated Security = yes;"); SqlDataAdapter da = new SqlDataAdapter(); BindingSource userTable = new BindingSource(); DataSet ds = new DataSet(); public Welcome() { InitializeComponent(); } private void Welcome_Load(object sender, EventArgs e) { query = "SELECT * FROM Users WHERE UserName=@x AND Users.Password=@y ";//x should be given username by current login da.SelectCommand = new SqlCommand(query, con); //y should be given password by current login ds.Clear(); da.Fill(ds, "usr"); userTable.DataSource = ds.Tables["usr"]; txtFristName.DataBindings.Add(new Binding("Text", userTable, "FirstName")); txtLastName.DataBindings.Add(new Binding("Text", userTable, "LastName")); txtAddress.DataBindings.Add(new Binding("Text", userTable, "Address")); txtTelephone.DataBindings.Add(new Binding("Text", userTable, "Telephone")); txtEmail.DataBindings.Add(new Binding("Text", userTable, "Email")); txtFax.DataBindings.Add(new Binding("Text", userTable, "Fax")); txtSection.DataBindings.Add(new Binding("Text", userTable, "Section")); txtPosition.DataBindings.Add(new Binding("Text", userTable, "Position")); } } </code></pre>
    singulars
    1. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. PTQuestion
    1. USpyrocumulus
    1. USMora
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PO
      singulars
      1. PTAnswer
    2. PO
      singulars
      1. PTAnswer
    3. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. COYou are not adding parameters with command for the 2nd Form
      singulars
      1. PORetrieving data from SQL server 2008r2 using winforms
      1. USHabib
    2. CO@Mora - The query contained within `Welcome_Load`does nothing because the parameter list is empty. Let alon the fact you are storing passwords in plain text, thats a horrible idea, no matter WHAT this is being used for. **Passwords no matter what the account is used for should be stored in plain text.**
      singulars
      1. PORetrieving data from SQL server 2008r2 using winforms
      1. USSecurity Hound
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload