DataGrid和列数 [英] Datagrid and column count

问题描述

我有一个的DataGrid 链接到数据表。

要这样的DataGrid我在后面的代码3列添加由我自己。

To this DataGrid I add by myself 3 columns in the code behind.

if (resultDataGrid.ItemsSource != null)
            {
                List<String> resColList = new List<String> { "Solde M.O", "Solde Deplacement", "Solde Pieces" };

                foreach (string cName in resColList)
                {
                    DataGridTextColumn column = new DataGridTextColumn();
                    column.Header = cName.ToUpper();
                    column.Binding = new Binding(cName.ToUpper());
                    resultDataGrid.Columns.Add(column);
                }
            }

我想重新索引的这列的DataGrid 谁包含19列，但问题是，当我做我的的DataGrid 列计数指望它只有3列在代码中添加的后面，即使我的的DataGrid 得到了我的数据表为的ItemSource

I wanted to re-index the columns of this DataGrid who contains 19 columns but the problem is that when I do a count on my DataGrid columns it count only the 3 columns added in the code behind even if my DataGrid got my DataTable as ItemSource.

 if (_tableCase.Rows.Count > 0)
            {
                resultDataGrid.ItemsSource = _tableCase.AsDataView();
                createResultColumn();
                setColumnIndex(); //This is the fonction which set the new index.
            }
            else
                resultDataGrid.ItemsSource = null;

            MessageBox.Show(resultDataGrid.Columns.Count.ToString()); //this return 3 first run and then 31 if I change the filter.

 for (int i = 0; i < resultDataGrid.Columns.Count; ++i) // Only display the 3 column added in the code behind.
                MessageBox.Show(resultDataGrid.Columns[i].Header.ToString());

但在我的应用我改变，从数据表在的DataGrid ，现在我的列数返回31。

but when in my application I'm changing the filter that display the rows from DataTable in the DataGrid, now my column count returns 31.

任何人有什么我错过任何解释？由于debuging没什么小时卡梅斯出来了。

Anyone got any explanation about what I missed ? Because after hours of debuging nothing cames out.

推荐答案

的文档状态：

Automatically generated columns are not added to the Columns collection.

所以，这是一种正常的行为。

So this is a normal behaviour.

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