在DatagridviewComboBoxCell中显示值 [英] Display value in DatagridviewComboBoxCell

问题描述

我有一个带有DatagridviewComboBoxColumn的网格。

我的代码在下面

I have a grid with DatagridviewComboBoxColumn.
My codes are below

DataTable dtoccupancy = bLRoomCheckIn.ReadOccupancy();
if (dtoccupancy.Rows.Count > 0)
{
   for (int i = 0; i < dgvRoomRate.Rows.Count; i++)
   {
      (dgvRoomRate.Rows[i].Cells[2] as DataGridViewComboBoxCell).DataSource = dtoccupancy;
      (dgvRoomRate.Rows[i].Cells[2] as DataGridViewComboBoxCell).ValueMember = "MasterId";
      (dgvRoomRate.Rows[i].Cells[2] as DataGridViewComboBoxCell).DisplayMember = "Name";
   }
}

但它没有显示单元格中的数据，

PLease帮助

But it didn't shows the data in the cell,
PLease Help

推荐答案

我运行了您的代码，您发布的代码段没有任何问题。



因此：



- dtoccupancy尚未填充（即 dtoccupancy .Rows.Count == 0 ）

或

- 未填充dgvRoomRate（即 dgvRoomRate.Rows.Count == 0 ）



问题可能在 bLRoomCheckIn.ReadOccupancy（）你还没有分享。



但是，如果你说单元格显示为空，但你想要立即显示一些数据（在使用点击之前）下拉列表）然后您还必须将值设置为有效值。例如。

I've run your code and there is nothing wrong with the code segment that you have posted.

Therefore either:

- dtoccupancy has not been populated (i.e. dtoccupancy.Rows.Count == 0)
or
- dgvRoomRate is not populated (i.e. dgvRoomRate.Rows.Count == 0)

The problem could be in bLRoomCheckIn.ReadOccupancy() which you haven't shared.

If however, you are saying that the cell is displaying as empty, but you want some data to show immediately (before the use clicks the dropdown) then you also have to set the Value to a valid value. E.g.

(dataGridView1.Rows[i].Cells[2] as DataGridViewComboBoxCell).Value = dtoccupancy.Rows[0][MasterId];

将值设置为第一个列表（假设数据表已填充）。



如果这不能解决您的问题，请使用有问题或评论吗？链接下面的回复和编辑您的问题，以发布 ReadOccupancy 方法的代码

will set the value to the first thing on the list (assuming the datatable is populated).

If this doesn't solve your problem then use the "Have a Question or Comment?" link below to respond and edit your question to post the code for the ReadOccupancy method

对不起，我的数据专栏的名称是一个错误的一个所以它抛出错误

任何方式非常感谢

Sorry folks my dataproperty name for the column was a wrong one so it throws the error
any way thanks alot

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