title: NullReferenceException sending input to a TextBox
body: <p>I'm trying to send a string from form2 to form3 to pre-load the form with info. I call a method on form3 accepting the string which starts a linq query to set the controls on the form. I get a NullReferenceException was unhandled in the first 
      foreach on recipeNameTextBox.Text = a.RecipeName; 
  I can see that the query ran and the info is in a.RecipName. I think I might be getting this error because the control hasn't been drawn yet. Any Ideas how to get around this? Form2 code is here:</p>
  
  <pre><code> private void updateButton_Click(object sender, EventArgs e)
   {
       Form3 Frm3 = new Form3();
       Frm3.Show();
  
       this.Hide();
       Frm3.takeInputFromForm2(recipeLabel.Text);
  }
  </code></pre>
  
  <p>form3 code here:</p>
  
  <pre><code> public void takeInputFromForm2(string incommingUpdateRecipe)
   {
       Query updateRecipe = new Query();
       IEnumerable&lt;Recipe&gt; newrecipe = updateRecipe.getRecipeInfo(incommingUpdateRecipe);
       foreach (var a in newrecipe)
       {
           recipeNameTextBox.Text = a.RecipeName;
           nationalityTextBox.Text = a.Nationality;
           eventTextBox.Text = a.Event;
           sourceTextBox.Text = a.Source;
           typeTextBox.Text = a.Type;
           ServingsTextBox.Text = a.Servings;
      }
      foreach (var b in newrecipe)
      {
          userRatingTextBox.Text = Convert.ToString(b.UserRating);
          familyRatingTextBox.Text = Convert.ToString(b.FamilyRating);
          healthRatingTextBox.Text = Convert.ToString(b.HealthRating);
          easeOfCookingTextBox.Text = Convert.ToString(b.CookingTime);
          cookingTimeTextBox.Text = Convert.ToString(b.CookingTime);
      }
      foreach (var c in newrecipe)
      {
          ingredientComboBox.Items.Add(c.RecipeIngredient);
      }
  }
  </code></pre>