Login Form using sql database c# -

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I am trying to create a sign up page. You enter the username and password and save it in the SQL database.

Note: As long as I add another column (password), the matter works.

This is a password code (username is the same): 

  static public zero deletion (string _Password) {try {connection.Open ()} SqlCeCommand commandInstert = New SqlCeCommand ("Include [table] values ​​(@ password)", connection); Command insert Parameter. Add ("password", password); CommandInsert.ExecuteNonQuery (); } Hold (SqlCeException Expaction) {message box. Show (Excl. ToString ()); } Finally {connection.Close (); }}   
 and this button settings are:  
  Private Zero Button 1_Click (Object Sender, EventArgs e) {if (deleteBox.Text! = " } {SQLFunctions.Insert (insertBox.Text); SQLFunctions.delete (deleteBox.Text); SQLFunctions.Refresh (this.dataGridView1); } Other {message box. Show ("login failed"); }}   
  Thanks    
 
 
 I think you need to make some changes to your code like this  
  SqlCeCommand commandInsert = new SqlCeCommand ("INSERT IN [TABLE] VALUES (@username, @password)", connection );   
 You should pass two parameters because you have two fields now DB and if you do not want to give a username, then you should specify this way  < Pre>  SqlCeCommand commandInsert = new SqlCeCommand ("INSERT [TABLE] (password) value (@ password)", connection);   
 and  
  command insert. Parameter. Add ("password", password);   
 It should be written as:  
  Command insert.Pameters.ad ("@ password", password);   
 And to pass the values ​​of this parameter, you can do this  
  command. Parameter. Advait Value ("@ password", insertBox.Text);

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