Adressbook windows forms C#

Question

trying to create a adressbook where i can add, delete, and search for a user but im stuck help !

Ajay Kumar · Answer

Creating an address book application in Windows Forms using C# involves several steps. Below, I'll guide you through the process of creating a basic address book application that allows you to add, delete, and search for users. Step 1: Set Up Your Windows Forms Project Open Visual Studio. Create a new Windows Forms Application project. Step 2: Design Your Form Design your form by adding the necessary controls (e.g., labels, textboxes, buttons, and a DataGridView). Your form might look something like this: Label: First Name TextBox: [First Name] Label: Last Name TextBox: [Last Name] Button: Add Button: Delete Button: Search DataGridView (to display the address book data) Step 3: Create a User Class You should create a class to represent a user's information. This class should have properties for First Name, Last Name, and any other relevant information. public class User { public string FirstName { get; set; } public string LastName { get; set; } // Add other properties like Address, Phone Number, etc., if needed. } Step 4: Create a List to Store Users In your form's code-behind, create a list to store the user data. List addressBook = new List (); Step 5: Implement Adding Users When the "Add" button is clicked, you can create a new User object and add it to your list. private void AddButton_Click(object sender, EventArgs e) { string firstName = FirstNameTextBox.Text; string lastName = LastNameTextBox.Text; User newUser = new User { FirstName = firstName, LastName = lastName }; addressBook.Add(newUser); // Refresh the DataGridView to display the updated data. RefreshDataGridView(); } Step 6: Implement Deleting Users When the "Delete" button is clicked, you can remove a user from the list based on the selected user in the DataGridView. private void DeleteButton_Click(object sender, EventArgs e) { if (dataGridView.SelectedRows.Count > 0) { int selectedIndex = dataGridView.SelectedRows[0].Index; addressBook.RemoveAt(selectedIndex); // Refresh the DataGridView to display the updated data. RefreshDataGridView(); } } Step 7: Implement Searching Users When the "Search" button is clicked, you can search for users based on their first name or last name and display the results in the DataGridView. private void SearchButton_Click(object sender, EventArgs e) { string searchQuery = SearchTextBox.Text.ToLower(); List searchResults = addressBook .Where(user => user.FirstName.ToLower().Contains(searchQuery) || user.LastName.ToLower().Contains(searchQuery)) .ToList(); dataGridView.DataSource = searchResults; } Step 8: Implement DataGridView Refresh Method Create a method to refresh the DataGridView with the latest data from your address book list. private void RefreshDataGridView() { dataGridView.DataSource = null; dataGridView.DataSource = addressBook; } Step 9: Wiring up Events Don't forget to wire up the event handlers for your buttons (Add, Delete, Search) in the Form Designer or code-behind to make them functional. Step 10: Test Your Application Build and run your application to test the functionality.