试图对数据网格视图列进行排序会显示错误消息 [英] trying to sorting the data grid view column shows error message

问题描述

我有一个带有列的datagridview

I have a datagridview with columns

                           customername 
                           customerimage
                           price

当我单击列标题时，将为整个datagridview排序，因为我尝试了此链接中给出的代码

when i click on the column header the entire datagridview will be sorted for that i have tried the code given in this link http://msdn.microsoft.com/it-it/library/0868ft3z%28v=vs.80%29.aspx

   private void dataGridView1_ColumnHeaderMouseClick(object sender, DataGridViewCellMouseEventArgs e)
    {

         /// i have just put the code given in that link 

              if (newColumn == null)
              {
    MessageBox.Show("Select a single column and try again.",
        "Error: Invalid Selection", MessageBoxButtons.OK,
        MessageBoxIcon.Error);
            }

    }

但是当我单击列标题时，即使有一些列具有值，它也会显示以上消息……

but it will shows the above message when i click on the column header even if there are some columns has values ......

任何人都可以帮忙吗?...

would any one pls help on this....

非常感谢......

many thanks ......

推荐答案

问题是当您单击标题未选中时. 您必须将选择模式设置为列标题选择:

The problem is when you are clicking the header it is not selected. You must set the selection mode to column header select:

dataGridView1.SelectionMode = DataGridViewSelectionMode.ColumnHeaderSelect;

必须在调用dataGridView1_ColumnHeaderMouseClick()之前完成此操作.例如，您可以将其放在表单或onLoad()的构造函数中.

This must be done before the call of dataGridView1_ColumnHeaderMouseClick(). You can put it in the constructor of the form or onLoad() for example.

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