combobox in list view in windows application

Bro i need display like that when on click in combobox listview like that show what ever your send code is workiing fine but i need like that above image 

You can modify your code to use a ListView control within your Form:

1. Add a ListView control to your form.
2. Use the ListView control's HitTest method and Items property.

Here's an updated version of your code:

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

public class Form6 : Form
{
    private ComboBox comboBox;
    private int comboBoxIndex;
    private ListView listView;

    public Form6()
    {
        InitializeComponent();

        listView = new ListView();
        listView.Bounds = new Rectangle(new Point(10, 10), new Size(300, 200));
        listView.View = View.Details;
        listView.Columns.Add("Column 1", -2, HorizontalAlignment.Left);
        listView.Columns.Add("Column 2", -2, HorizontalAlignment.Left);
        listView.Items.Add(new ListViewItem(new string[] { "Item 1", "SubItem 1" }));
        listView.Items.Add(new ListViewItem(new string[] { "Item 2", "SubItem 2" }));
        listView.MouseClick += ListView_MouseClick;
        this.Controls.Add(listView);

        comboBox = new ComboBox();
        comboBox.Visible = false;
        comboBox.SelectedIndexChanged += ComboBox_SelectedIndexChanged;
        this.Controls.Add(comboBox);
    }

    private void ListView_MouseClick(object sender, MouseEventArgs e)
    {
        var hitTest = listView.HitTest(e.Location);
        if (hitTest.Item != null && hitTest.SubItem != null)
        {
            comboBoxIndex = hitTest.Item.Index;
            comboBox.Bounds = hitTest.SubItem.Bounds;
            comboBox.Items.Clear();
            comboBox.Items.AddRange(new string[] { "Option 1", "Option 2", "Option 3" });
            comboBox.Visible = true;
            comboBox.BringToFront();
            comboBox.Focus();
        }
    }

    private void ComboBox_SelectedIndexChanged(object sender, EventArgs e)
    {
        if (comboBoxIndex >= 0 && comboBoxIndex < listView.Items.Count)
        {
            listView.Items[comboBoxIndex].SubItems[1].Text = comboBox.SelectedItem.ToString();
        }
        comboBox.Visible = false;
    }
}

In this updated code:

• A ListView control is added to the form.
• The ListView control's MouseClick event is used to handle the display of the ComboBox.
• The HitTest method and Items property are used on the ListView control.

Thanks

The HitTest method in the ListView control is used to determine which item or subitem is located at a specific point, typically where the user has clicked. It returns a ListViewHitTestInfo object that provides information about the item, subitem, and location.

If you're getting an error with this.HitTest(e.Location), it might be due to a few reasons:

1. Namespace Issue: Ensure you have the correct namespaces included:

   using System.Windows.Forms;

1. Event Argument: Make sure you're using the correct event argument. The MouseClick event uses MouseEventArgs, which provides the Location property.

2. Control Type: Verify that you're using the HitTest method on a ListView control.

Here's a more detailed example to help you troubleshoot:

private void ComboBoxListView_MouseClick(object sender, MouseEventArgs e)
{
    ListViewHitTestInfo hitTest = this.HitTest(e.Location);
    if (hitTest.Item != null && hitTest.SubItem != null)
    {
        comboBoxIndex = hitTest.Item.SubItems.IndexOf(hitTest.SubItem);
        comboBox.Bounds = hitTest.SubItem.Bounds;
        comboBox.Items.Clear();
        comboBox.Items.AddRange(new string[] { "Option 1", "Option 2", "Option 3" });
        comboBox.Visible = true;
        comboBox.BringToFront();
        comboBox.Focus();
    }
}

If the error persists, please provide more details about the error message you're encountering. This will help in diagnosing the issue more accurately.

this.HitTest(e.Location)  i am gettting error on hittest what is that hittest 

To display a ComboBox dropdown list inside a ListView control in a Windows application, you typically need to use a custom solution because the ListView control does not natively support embedding ComboBoxes. Here's a general approach you can take: 

1. Create a Windows Forms Application: Start by creating a new Windows Forms application in Visual Studio.

2. Add a ListView Control: Drag and drop a ListView control onto your form from the toolbox.

3. Handle the ListView's SubItem Click Event: You can use the ItemMouseClick event of the ListView to trigger the ComboBox display when a certain sub-item is clicked.

4. Add a ComboBox Control: Create a ComboBox and set its properties according to your needs. Initially, you can set it to be invisible.

5. Show the ComboBox on Click: When a specific cell (sub-item) in the ListView is clicked, you can position the ComboBox over that cell and populate it with the desired items.

6. Handle ComboBox Events: Make sure to handle the ComboBox's SelectedIndexChanged event to capture the selected value and update the ListView accordingly.

Here's a simplified example to illustrate the concept:

private void listView1_ItemMouseClick(object sender, ListViewItemMouseClickEventArgs e)
{
    \/\/ Assuming you want to show ComboBox when clicking on the first column
    if (e.Item.Index >= 0 && e.SubItem.Index == 0) \/\/ Change index as needed
    {
        comboBox1.Location = e.Location; \/\/ Set location of ComboBox to the clicked item
        comboBox1.Visible = true; \/\/ Make ComboBox visible
        comboBox1.BringToFront(); \/\/ Bring ComboBox to front
    }
}

private void comboBox1_SelectedIndexChanged(object sender, EventArgs e)
{
    \/\/ Update ListView with the selected value from ComboBox
    listView1.SelectedItems[0].SubItems[0].Text = comboBox1.SelectedItem.ToString();
    comboBox1.Visible = false; \/\/ Hide ComboBox after selection
}

Displaying a ComboBox dropdown list within a ListView control in a Windows application can be a bit tricky, but it's definitely doable. Here's a basic approach to get you started:

1. Create a custom ListView control: You'll need to subclass the ListView control to handle the display of the ComboBox.

2. Handle the ComboBox creation and positioning: You'll need to create and position the ComboBox when the user clicks on a specific cell in the ListView.

3. Update the ListView with the selected value: Once the user selects a value from the ComboBox, update the ListView with the selected value.

Here's a simple example in C#:

public class ComboBoxListView : ListView
{
    private ComboBox comboBox;
    private int comboBoxIndex;

    public ComboBoxListView()
    {
        comboBox = new ComboBox();
        comboBox.Visible = false;
        comboBox.SelectedIndexChanged += ComboBox_SelectedIndexChanged;
        this.Controls.Add(comboBox);
        this.MouseClick += ComboBoxListView_MouseClick;
    }

    private void ComboBoxListView_MouseClick(object sender, MouseEventArgs e)
    {
        var hitTest = this.HitTest(e.Location);
        if (hitTest.Item != null && hitTest.SubItem != null)
        {
            comboBoxIndex = hitTest.Item.SubItems.IndexOf(hitTest.SubItem);
            comboBox.Bounds = hitTest.SubItem.Bounds;
            comboBox.Items.Clear();
            comboBox.Items.AddRange(new string[] { "Option 1", "Option 2", "Option 3" });
            comboBox.Visible = true;
            comboBox.BringToFront();
            comboBox.Focus();
        }
    }

    private void ComboBox_SelectedIndexChanged(object sender, EventArgs e)
    {
        if (comboBoxIndex >= 0 && comboBoxIndex < this.Items.Count)
        {
            this.Items[comboBoxIndex].SubItems[1].Text = comboBox.SelectedItem.ToString();
        }
        comboBox.Visible = false;
    }
}

In this example:

• A ComboBox is added to the ListView control.
• When the user clicks on a cell, the ComboBox is displayed at the cell's location.
• The ComboBox is populated with some options.
• When the user selects an option, the ListView is updated with the selected value.

Thanks