Reputation: 631
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:
private void updateButton_Click(object sender, EventArgs e)
{
Form3 Frm3 = new Form3();
Frm3.Show();
this.Hide();
Frm3.takeInputFromForm2(recipeLabel.Text);
}
form3 code here:
public void takeInputFromForm2(string incommingUpdateRecipe)
{
Query updateRecipe = new Query();
IEnumerable<Recipe> 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);
}
}
Upvotes: 2
Views: 2122
Reputation: 5944
You are probably missing the InitializeComponent
in your Form3 constructor.
Upvotes: 3