Question

我有一个绑定源，用作数据网格的数据源。绑定绑定源后，我试图交换绑定源的两行。

 object currentRow = dashBoardBindingSource[index];
                    object aboveRow = dashBoardBindingSource[index - 1];
                    dashBoardBindingSource[index] = aboveRow;
                    dashBoardBindingSource[index - 1] = currentRow;

上面的代码给了我一个例外如下

Cannot set an object into this list.

我使用以下代码将数据绑定到绑定源

OnlineOutageReport[] outageReports;
dashBoardBindingSource = new BindingSource();
            dashBoardBindingSource.DataSource = ToDataTable<OnlineOutageReport>(outageReports);


private static DataTable ToDataTable<T>(IList<T> data)
    {
        PropertyDescriptorCollection props =
            TypeDescriptor.GetProperties(typeof(T));
        DataTable table = new DataTable();
        for (int i = 0; i < props.Count; i++)
        {
            PropertyDescriptor prop = props[i];
            table.Columns.Add(prop.Name, Nullable.GetUnderlyingType(
        prop.PropertyType) ?? prop.PropertyType);

        }
        object[] values = new object[props.Count];
        foreach (T item in data)
        {
            for (int i = 0; i < values.Length; i++)
            {
                values[i] = props[i].GetValue(item);
            }
            table.Rows.Add(values);
        }
        return table;
    }

任何人都有自己的想法。感谢

Answer 1

以下是将bindingSource从DataGridView的一行移动到另一行的方法。

            int index = this.KeyDataGridView.SelectedRows[0].Index;

            this.KeyDataGridView.ClearSelection();
            if (index == this.KeyDataGridView.Rows.Count - 1)
            {
                return;//can go down
            }
            var tempKey = this.keysBindingSource[index];
            this.keysBindingSource.RemoveAt(index);
            this.keysBindingSource.Insert(index + 1, tempKey);

它可能只需要您使用dataSource.Insert（index）而不是

在绑定源中交换两个条目

1 个答案: