DataGridView System.InvalidOperationException单元格不在DataGridView中 [英] DataGridView System.InvalidOperationException Cell is not in a DataGridView

问题描述

第一次有一段时间，我可以在Google上找不到关于此异常的使用信息，希望有人可能会遇到这种情况。

我有一个DataGridView，我在Leave事件上验证空单元格，并删除这些行。

如果我将最后一个单元格留在最后一行，并从DGV中选取标签，则会抛出以下异常：

System.InvalidOperationException：单元格不在DataGridView中。
单元格无法检索继承的单元格样式。

我没有使用数据绑定，如果我将断点放在 this.dataGridView1.Rows.RemoveAt（c.RowIndex）; 它被命中，如果我进入这一行，在执行非用户代码期间抛出异常。

我以为这是与未提交的更改有关，但似乎明确承诺更改不会影响结果。

我的离开事件代码：

  private void dataGridView1_Leave（object sender，EventArgs e）
 {
 
 if（this.dataGridView1.IsCurrentRowDirty || this.dataGridView1.IsCurrentCellDirty）this.dataGridView1.CommitEdit （DataGridViewDataErrorContexts.Commit）; 
 
 //验证空行
 foreach（this.dataGridView1.Rows中的DataGridViewRow行）
 {
 
 foreach（Data.CridViewCell c in row.Cells ）
 {
 
 if（c.Value == null || c.Value.ToString（）== String.Empty）
 {
 if（c。 EditedFormattedValue == null || c.EditedFormattedValue.ToString（）==）
 {
 this.dataGridView1.Rows.RemoveAt（c.RowIndex）; 
 break; 
} 
 
} 
} 
 
 
} 
} 
  pre> 
 
 
异常数据在这里：
  System.InvalidOperationException：单元格不在DataGridView中。单元格无法检索继承的单元格样式。 
在System.Windows.Forms.DataGridViewCell.GetInheritedStyle（DataGridViewCellStyle inheritedCellStyle，Int32 rowIndex，Boolean includeColors）
在System.Windows.Forms.DataGridView.OnCellValidating（DataGridViewCell& dataGridViewCell，Int32 columnIndex，Int32 rowIndex，DataGridViewDataErrorContexts上下文）
在System.Windows.Forms.DataGridView.CommitEdit（DataGridViewCell& dataGridViewCurrentCell，DataGridViewDataErrorContexts上下文，DataGridViewValidateCellInternal validateCell，Boolean fireCellLeave，Boolean fireCellEnter，Boolean fireRowLeave，Boolean fireRowEnter，Boolean fireLeave）
在System.Windows .Forms.DataGridView.EndEdit（DataGridViewDataErrorContextts context，DataGridViewValidateCellInternal validateCell，Boolean fireCellLeave，Boolean fireCellEnter，Boolean fireRowLeave，Boolean fireRowEnter，Boolean fireLeave，Boolean keepFocus，Boolean resetCurrentCell，Boolean resetAnchorCell）
在System.Windows.Forms.DataGridView。 ProcessDialogKe y（Key keyData）
在System.Windows.Forms.Control.ProcessDialogKey（Keys keyData）
在System.Windows.Forms.TextBoxBase.ProcessDialogKey（Keys keyData）
在System.Windows。 Forms.Control.PreProcessMessage（Message& msg）
在System.Windows.Forms.Control.PreProcessControlMessageInternal（控制目标，消息和msg）
在System.Windows.Forms.Application.ThreadContext.PreTranslateMessage（MSG& MSG）
在System.Windows.Forms.Application.ThreadContext.System.Windows.Forms.UnsafeNativeMethods.IMsoComponent.FPreTranslateMessage（MSG& msg）
在System.Windows.Forms.Application.ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner（Int32原因，ApplicationContext上下文）
在System.Windows.Forms.Application.ThreadContext中的$ p 
（IntPtr dwComponentID，Int32原因，Int32 pvLoopData） RunMessageLoop（Int32原因，ApplicationContext上下文）
在System.Windows.Forms.Application.Run（Form mainForm）
  
 
 
解决方案
如果您使用foreach-loop，则无法从收集的内容中删除项目G。在这里您要从 this.dataGridView1.Rows 中删除项目。
 
 
 
尝试这样：
 
 
 （int i = 0; i< dataGridView1.Rows.Count; i ++）
 {
 DataGridViewRow row = dataGridView1.Rows [i]; 
  （int k = 0; k< row.Cells.Count; k ++）
 
 
 
 $ b DataGridViewCell c = row.Cells [k]; 
 
 if（c.Value == null || c.Value.ToString（）== String.Empty）
 {
 if（c.EditedFormattedValue == null || c.EditedFormattedValue.ToString（）==）
 {
 this.dataGridView1.Rows.RemoveAt（c.RowIndex）; 
 
 //减少我，因为集合变小
 i--; 
 break; 
} 
 
} 
} 
} 
  
 
For the first time in a while, I can find no use information on this exception on Google... hoping someone else may have come across it.

I have a DataGridView that I validate for empty cells on the Leave event and remove those rows. 

If I leave the last cell empty in the last row and tab away from the DGV the following exception is thrown: 

  
System.InvalidOperationException: Cell is not in a DataGridView. The
  cell cannot retrieve the inherited cell style.
I am not using Data Binding and a if I place a Breakpoint at this.dataGridView1.Rows.RemoveAt(c.RowIndex); It is hit and if if I step into this line the exception is thrown during the execution of non-user code...

I had thought this was to do with Uncommitted Changed but it seems explicitly committing the changes does not affect the outcome. 

My Leave Event code:
    private void dataGridView1_Leave(object sender, EventArgs e)
    {

        if (this.dataGridView1.IsCurrentRowDirty || this.dataGridView1.IsCurrentCellDirty) this.dataGridView1.CommitEdit(DataGridViewDataErrorContexts.Commit);

        //Validate for empty rows
        foreach(DataGridViewRow row in this.dataGridView1.Rows)
        {

            foreach(DataGridViewCell c in row.Cells)
            {

                if(c.Value == null || c.Value.ToString() == String.Empty)
                {
                    if (c.EditedFormattedValue == null || c.EditedFormattedValue.ToString() == "")
                    {
                        this.dataGridView1.Rows.RemoveAt(c.RowIndex);
                        break;
                    }

                }
            }


        }
    }
Exception Data is here:
System.InvalidOperationException: Cell is not in a DataGridView. The cell cannot retrieve the inherited cell style.
   at System.Windows.Forms.DataGridViewCell.GetInheritedStyle(DataGridViewCellStyle inheritedCellStyle, Int32 rowIndex, Boolean includeColors)
   at System.Windows.Forms.DataGridView.OnCellValidating(DataGridViewCell& dataGridViewCell, Int32 columnIndex, Int32 rowIndex, DataGridViewDataErrorContexts context)
   at System.Windows.Forms.DataGridView.CommitEdit(DataGridViewCell& dataGridViewCurrentCell, DataGridViewDataErrorContexts context, DataGridViewValidateCellInternal validateCell, Boolean fireCellLeave, Boolean fireCellEnter, Boolean fireRowLeave, Boolean fireRowEnter, Boolean fireLeave)
   at System.Windows.Forms.DataGridView.EndEdit(DataGridViewDataErrorContexts context, DataGridViewValidateCellInternal validateCell, Boolean fireCellLeave, Boolean fireCellEnter, Boolean fireRowLeave, Boolean fireRowEnter, Boolean fireLeave, Boolean keepFocus, Boolean resetCurrentCell, Boolean resetAnchorCell)
   at System.Windows.Forms.DataGridView.ProcessDialogKey(Keys keyData)
   at System.Windows.Forms.Control.ProcessDialogKey(Keys keyData)
   at System.Windows.Forms.TextBoxBase.ProcessDialogKey(Keys keyData)
   at System.Windows.Forms.Control.PreProcessMessage(Message& msg)
   at System.Windows.Forms.Control.PreProcessControlMessageInternal(Control target, Message& msg)
   at System.Windows.Forms.Application.ThreadContext.PreTranslateMessage(MSG& msg)
   at System.Windows.Forms.Application.ThreadContext.System.Windows.Forms.UnsafeNativeMethods.IMsoComponent.FPreTranslateMessage(MSG& msg)
   at System.Windows.Forms.Application.ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(IntPtr dwComponentID, Int32 reason, Int32 pvLoopData)
   at System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(Int32 reason, ApplicationContext context)
   at System.Windows.Forms.Application.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context)
   at System.Windows.Forms.Application.Run(Form mainForm)

解决方案
If you're using foreach-loop, you can't remove items from the collection it's using. Here you're removing items from this.dataGridView1.Rows.

Try this:
for (int i = 0; i < dataGridView1.Rows.Count; i++)
{
   DataGridViewRow row = dataGridView1.Rows[i];

   for (int k = 0; k < row.Cells.Count; k++)
   {
      DataGridViewCell c = row.Cells[k];

      if (c.Value == null || c.Value.ToString() == String.Empty)
      {
         if (c.EditedFormattedValue == null || c.EditedFormattedValue.ToString() == "")
         {
            this.dataGridView1.Rows.RemoveAt(c.RowIndex);

            // Decrease i, as the collection got smaller
            i--;
            break;
          }

       }
    }
 }


                        
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