WinForm Column cannot be added because its CellType property is null.

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在Winform  DatatGridView 控件中绑定了一个模型的属性,结果在生成窗口时,发生错误,异常信息如下 :

Column cannot be added because its CellType property is null.

at System.Windows.Forms.DataGridView.OnAddingColumn(DataGridViewColumn dataGridViewColumn)
at System.Windows.Forms.DataGridViewColumnCollection.Add(DataGridViewColumn dataGridViewColumn)
at System.Windows.Forms.DataGridView.CorrectColumnFrozenStates(DataGridViewColumn[] dataGridViewColumns)
at System.Windows.Forms.DataGridView.OnAddingColumns(DataGridViewColumn[] dataGridViewColumns)
at System.Windows.Forms.DataGridViewColumnCollection.AddRange(DataGridViewColumn[] dataGridViewColumns)

找了好半天才找出问题的原因,绑定的属性在数据库表中不存在的列名

解决方案如下 :

1. 绑定的字段一定要与数据库表中的列的字段名相同 

2. 如果是模型,这个模型的属性字段在数据库中没有,那就不用把属性写在datagridView 的列中,在设置datasource 后,直接设置列的可见 性

 

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