T＆gt;其绑定到的BindingList℃后，制作一个DataGridView列编辑; [英] Making a DataGridView column editable after binding it to a BindingList<T>

问题描述

我有一个 DataGridView的，我将它绑定到一个的BindingList＆LT; KeyValuePair＆LT;字符串，浮动＆GT;＆GT; 。这里的code的相关部分：

I have a DataGridView and I'm binding it to a BindingList<KeyValuePair<string, float>>. Here's the relevant part of the code:

        dgv.AutoGenerateColumns = false;

        DataGridViewTextBoxColumn firstColumn = new DataGridViewTextBoxColumn();
        firstColumn.DataPropertyName = "Key";
        firstColumn.HeaderText = "First Column";

        DataGridViewTextBoxColumn secondColumn = new DataGridViewTextBoxColumn();
        secondColumn.DataPropertyName = "Value";
        secondColumn.HeaderText = "Second Column";
        secondColumn.ReadOnly = false;
        secondColumn.ValueType = typeof(float);

        dgv.Columns.Add(firstColumn);
        dgv.Columns.Add(secondColumn);
        dgv.AutoSizeColumnsMode = DataGridViewAutoSizeColumnsMode.Fill;
        dgv.MultiSelect = false;
        dgv.EditMode = DataGridViewEditMode.EditOnKeystrokeOrF2;
        dgv.ReadOnly = false;

        _bindingList = new BindingList<KeyValuePair<string, float>>(_someList);
        dgv.DataSource = _bindingList;

但第二列仍然是不可编辑的。我应该怎么做，使第二列编辑和第一个不？

But the second column is still not editable. What should I do to make the second column editable and the first one not?

编辑：我想改变的的BindingList 实例本身中得到体现。

I'd like the changes to be reflected on the BindingList instance itself.

编辑2：我在code末尾加上这一行，现在我得到一个错误：

Edit 2: I have added this line in the end of the code and now I'm getting an error:

        dgv.Columns[1].ReadOnly = false;

我得到这个错误：

I get this error:

DataGridView的列必须有只读设置为True。

修改3：这个问题似乎是，我使用 KeyValuePair <​​/ code>在我的列表

Edit 3: The problem seems to be that I'm using KeyValuePairs in my list.

推荐答案

这个问题原来是该键和值的 KeyValuePair <​​/ code>类的属性是只读的。该解决方案是创建一个具有 public的setter s到重新present一类新的数据。

The problem turns out to be that the Key and Value properties of the KeyValuePair class are read-only. The solution is to create a new class that has public setters to represent the data.

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