ObjectListView行仅在鼠标悬停后才格式化问题求助

Hey there! I’ve run into this exact issue with ObjectListView before—super frustrating when your row formatting only kicks in when you hover over items. Let’s break down why this happens and how to fix it.

Why This Happens #

By default, ObjectListView triggers the FormatRow event only when a row needs to be redrawn (like on hover, scrolling into view, or when the row’s data is updated). It doesn’t automatically fire this event for all rows right after you bind your data, which is why you’re seeing the formatting only on hover initially.

Solutions to Fix It #

1. Force a Refresh After Binding Data

The quickest fix is to manually trigger a refresh of all objects right after you bind your data to the olvDifference control. This will make every row run through your FormatRow logic immediately.

Here’s how to update your data-binding code:

// Example: Loading your conflict data and binding it
var conflictData = GetYourConflictList(); // Replace with your data retrieval logic
olvDifference.SetObjects(conflictData);

// Force all rows to trigger FormatRow
olvDifference.RefreshObjects();

2. Ensure Event Binding is Correct

Double-check that your ConflictFormatRow method is properly hooked up to the FormatRow event of olvDifference. You can do this either in the designer (by selecting the control, going to Events, and assigning ConflictFormatRow to FormatRow) or in code:

// Add this in your form's constructor or initialization method
olvDifference.FormatRow += ConflictFormatRow;

3. Refresh Individual Rows When Data Changes

If your Conflict objects’ properties (like resolution) can change after initial binding, make sure to refresh the specific row when that happens. This will update the formatting without reloading all data:

// When a conflict's resolution changes
Conflict updatedConflict = GetUpdatedConflict();
olvDifference.RefreshObject(updatedConflict);

Full Example Code #

Putting it all together, here’s what your code might look like:

public partial class YourForm : Form
{
    public YourForm()
    {
        InitializeComponent();
        // Hook up the FormatRow event
        olvDifference.FormatRow += ConflictFormatRow;
        LoadConflicts();
    }

    private void LoadConflicts()
    {
        // Get your conflict data
        List<Conflict> conflicts = FetchConflictsFromSource();
        olvDifference.SetObjects(conflicts);
        // Trigger initial formatting for all rows
        olvDifference.RefreshObjects();
    }

    private void ConflictFormatRow(object sender, BrightIdeasSoftware.FormatRowEventArgs e)
    {
        Conflict conflict = e.Model as Conflict;
        if (conflict == null) return;

        // Your formatting logic here
        switch (conflict.resolution)
        {
            case ConflictResolution.Resolved:
                e.Item.BackColor = Color.LightGreen;
                break;
            case ConflictResolution.Unresolved:
                e.Item.BackColor = Color.LightSalmon;
                break;
            default:
                e.Item.BackColor = SystemColors.Window;
                break;
        }
    }
}

This should make your row formatting apply to all items as soon as they’re loaded, not just when you hover over them.

内容的提问来源于stack exchange，提问作者rebbi