我有一个datagridview,它通过从SQL服务器获取数据来填充.

gridview.Datasource = dataSet.Tables[0] 

– &GT没问题.

在这个网格中,一列是ComboboxColumn ……

对于这个填充(我的意思是,只绑定一个数据源),没问题：

cmb.DataSource = Enum.GetValues(typeof(MyEnum));
cmb.ValueType = typeof(MyEnum);
cmb.DataPropertyName = "MyEnum";

我想知道如何数据绑定datagridviewcomboboxcolumn(此列的DB中的值是此组合框的选定值的索引.此组合框的数据源是枚举).

DB中的值：2 – >这是要显示的项目的索引

我可以在某处精确地修改DB列名吗？如果我在datapropertyname中这样做,我会收到错误 – > DataGridViewComboboxCell值无效…

提前致谢 ！

编辑：问题“已解决”.我用数据表替换了Enum.更简单.

解决方法:

如上面的评论中所述,我向您提供以下选项：

这是一个例子,您可以根据需要对其进行细化,因此首先在设置gridview数据源之前添加未绑定的comboboxColumn为其命名,然后设置datasource,然后设置datagridview数据源并订阅CellEndEdit和RowStateChanged事件如下：

 DataGridViewComboBoxColumn col = new DataGridViewComboBoxColumn();
 col.DataSource = Enum.GetValues(typeof(MyEnum));
 col.Name = "testcolumn";

 int index = dataGridView1.Columns.Add(col);
 //"index" is if you want to set properties and so on to this column
 //but no need for this example.
 //dataGridView1.Columns[index].Name = "testcolumn";

 dataGridView1.DataSource = test;

 //the 2 event-handlers         
 dataGridView1.CellEndEdit += new DataGridViewCellEventHandler(dataGridView1_CellEndEdit);
 dataGridView1.RowStateChanged += new DataGridViewRowStateChangedEventHandler(dataGridView1_RowStateChanged);

然后在这两个处理程序中执行此操作(处理CellEndEdit,以便每次编辑包含数据库中的值的单元格时,组合单元也会更新);

void dataGridView1_CellEndEdit(object sender, DataGridViewCellEventArgs e)
{   
      //here i use TestCol as a name for the column i want to check
      //you replace it with the column you have from the database
      //if you didnt change it of course...
      if (e.ColumnIndex == dataGridView1.Columns["TestCol"].Index)
      {
           //and here i assign the value on the current row in the testcolumn column
           //thats the combobox column...
           dataGridView1.Rows[e.RowIndex].Cells["testcolumn"].Value = (MyEnum)((int)dataGridView1.Rows[e.RowIndex].Cells[e.ColumnIndex].Value);
      }
}

private void dataGridView1_RowStateChanged(object sender, DataGridViewRowStateChangedEventArgs e)
{
      //here i assign the initial values to the each cell in the combobox column
      //this whole example could be done in other ways but in a nutshell
      //it should provide you a good kickstart to play around.
      if (e.Row.DataBoundItem != null)
      {
           e.Row.Cells["testcolumn"].Value = (MyEnum)((int)e.Row.Cells["TestCol"].Value);
      }
}

我假设数据库中的列只有数字值,如0或2或5,并且您的枚举必须具有相同数量的值,例如,如果在数据库列中,您的值最多为5,那么您的枚举将是这样的例如：

public enum MyEnum
{
    zero,
    one,
    two,
    three,
    four,
    five
}