Question

我很难解决这个问题。我有一个名为Section的对象，我将此Section对象添加到列表中，然后该列表用作数据网格视图数据源。当我将对象添加到列表中时，一切都很好，当我设置DataGridView数据源并将其显示在网格上时，一切正常。当我添加其他类型为Section的Object时，将List设置为网格数据源后，网格将显示2个对象，但是这两个对象与添加的第一个对象相同。添加第三个对象的行为相同，依此类推。是什么原因造成的？绑定到datagridview时更改数据源列表？

这里是设置对象的部分

    private void AddSectionButtonClicked(object sender, EventArgs e) {
        try {

            var documentType = MopDocument.DocumentType;
            var sections = FillAssemblyInformation(documentType.DllPath);
            if (sections == null || sections.Count <= 0)
                return;

            var addSectionForm = new MopSectionAddEditForm(sections);
            var dialog = addSectionForm.ShowDialog();
            if (dialog == DialogResult.Cancel)
                return;

            var addedSection = addSectionForm.AddedEditedMopSection;

            var sectionsList = dgvSelectedSections.DataSource as BindingList<MopSection>;
            if (sectionsList == null || sectionsList.Count == 0) {
                sectionsList = new BindingList<MopSection>();
                addedSection.SequenceNumber = 1;
            } else {
                var lastLevel = sectionsList[sectionsList.Count - 1].SequenceNumber;
                addedSection.SequenceNumber = lastLevel + 1;
            }

            sectionsList.Add(addedSection); 



            // I looped this list to check what objects are being added, and it is correct.
            dgvSelectedSections.DataSource = null;
            dgvSelectedSections.DataSource = sectionsList;
            // I looped again on the list and now the objects are duplicated to the first element that was added to the list



            dgvSelectedSections.Rows[dgvSelectedSections.Rows.Count - 1].Selected = true;
        } catch (Exception ex) {
           Logger.ShowErrorDialog("EXception Occured", ex);
        }
    }

请告知您为什么会发生这种情况

Answer 1

发现解决方案，这是由于在Section Objects中重写的.Equals方法中的错误检查导致的。

设置DGV数据源[C＃]

1 个答案: