prueba

Form1.cs

@@ -7,6 +7,8 @@ using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
 using System.Windows.Forms;
+using System.Data.SQLite;
+
 
 namespace compabetov2
 {
@@ -39,12 +41,30 @@ namespace compabetov2
 
         private void button1_Click(object sender, EventArgs e)
         {
-            
 
-            MenuPrincipal menu = new MenuPrincipal();
-            menu.Show();
+            if (txtusuario.Text.Trim() == "" && txtcontraseña.Text.Trim() == "")
+            {
+
+                MessageBox.Show("ERROR TODO VACIO");
+            }
+            else
+            {
+
+                string query = "SELECT  * FROM login WHERE ";
+                SQLiteConnection conn
+            
+            }
+
+
+            
 
 
+        }
+
+        private void textBox1_TextChanged(object sender, EventArgs e)
+        {
+
         }
     }
-}
+    }
+