Text Control在修改HypertextLink的值时程序崩溃e

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本帖最后由 mindrayguowei 于 2016-4-20 11:51 编辑

为了通过HypertextLink来实现点击一下HypertextLink内容来实现下拉修改HypertextLink的值的功能, 添加了一个TextFieldClicked事件, 点击以下会弹出一个combobox, 通过combobox来选择相应的值, 并设置到HypertextLink里去, 但是遇到很严重的程序崩溃问题, 部署到客户的电脑上后,频繁的出现偶发的系统崩溃, 异常无法捕捉到. 但是在开发环境里面无法重现该问题.

以下是代码

void _textControl_TextFieldClicked(object sender, TextFieldEventArgs e)
{
if (_textControl.EditMode == TXTextControl.EditMode.ReadOnly)
{
return;
}
try
{
HypertextLink textLink = e.TextField as HypertextLink;
if (textLink != null)
{
string[] strArray = textLink.Target.Split(";".ToCharArray(),StringSplitOptions.RemoveEmptyEntries);
if (strArray.Length == 1)
{
_textControl.Select(textLink.Start - 1, textLink.Length);
return;
}
//if (Array.IndexOf(strArray, textLink.Text) == -1)
//{
// _textControl.Select(textLink.Start - 1, textLink.Length);
// return;
//}
_textControl.Controls.Clear();
ComboBox comboBox = new ComboBox();
comboBox.Items.AddRange(strArray);
int left = (textLink.Bounds.Location.X - _textControl.ScrollLocation.X) / TwipsPerPixel * _textControl.ZoomFactor / 100;
int top = (textLink.Bounds.Location.Y - _textControl.ScrollLocation.Y) / TwipsPerPixel * _textControl.ZoomFactor / 100;
System.Drawing.Point cbLocation = new System.Drawing.Point(left, top);
comboBox.Location = cbLocation;
comboBox.DropDownStyle = ComboBoxStyle.Simple;
comboBox.BackColor = System.Drawing.Color.FromArgb(255, 255, 192);
string maxString = string.Empty;
Array.ForEach<string>(strArray, delegate(string str) { if (str.Trim().Length > maxString.Length) maxString = str; });
System.Drawing.Graphics graphics = _textControl.CreateGraphics();
System.Drawing.SizeF sizef = graphics.MeasureString(maxString, _textControl.Font);
comboBox.Width = (int)Math.Ceiling(sizef.Width) + 30;
comboBox.SelectedText = textLink.Text;
_textControl.Controls.Add(comboBox);
comboBox.Focus();
_currentTextlink = textLink;
comboBox.SelectedIndexChanged += new EventHandler(comboBox_SelectedIndexChanged);
comboBox.LostFocus += new EventHandler(comboBox_LostFocus);
}
}
catch (Exception ex)
{
LogAdapter.LogError("_textControl_TextFieldClicked:" + ex.Message);
}
}
void comboBox_LostFocus(object sender, EventArgs e)
{
try
{
if (_currentTextlink == null) return;
ComboBox combobox = sender as ComboBox;
if (combobox.SelectedItem == null)
{
_currentTextlink.Text = ((ComboBox)sender).Text;
}
else
{
_currentTextlink.Text = ((ComboBox)sender).SelectedItem.ToString();
}
_documentDirty = true;
}
catch (Exception ex)
{
LogAdapter.LogError("comboBox_LostFocus:" + ex.Message);
}
finally
{
try
{
_currentTextlink = null;
_textControl.Controls.Clear();
}
catch
{ }
}
}
void comboBox_SelectedIndexChanged(object sender, EventArgs e)
{
try
{
if (_currentTextlink == null) return;
ComboBox combobox = sender as ComboBox;
if (combobox.SelectedItem == null)
{
_currentTextlink.Text = ((ComboBox)sender).Text;
}
else
{
_currentTextlink.Text = ((ComboBox)sender).SelectedItem.ToString();
}
_documentDirty = true;
}
catch (Exception ex)
{
LogAdapter.LogError("comboBox_SelectedIndexChanged:" + ex.Message);
}
finally
{
try
{
_currentTextlink = null;
_textControl.Controls.Clear();
}
catch
{ }
}
}

复制代码

以下是输出的dump文件在windbg里面的信息, 生产环境是windows 8.1 x64, 在某些windows 7 64位和32位下也都会报错,编译环境是32位程序, 没有拿到symbol文件, 调试不下去了

Loading unloaded module list
.....
eax=00000000 ebx=00000000 ecx=00000000 edx=00000000 esi=00000003 edi=00000003
eip=773fc7ec esp=00d0d3b8 ebp=00d0d540 iopl=0       nv up ei pl nz na pe nc
cs=0023  ss=002b  ds=002b  es=002b  fs=0053  gs=002b          efl=00200206
*** ERROR: Symbol file could not be found.  Defaulted to export symbols for ntdll.dll -
ntdll!NtWaitForMultipleObjects+0xc:
773fc7ec c21400       ret    14h

gw0506 · gw0506

开发环境不能重现的话确实很麻烦。
崩溃的时候没有任何提示信息是吗？我看你代码里加了很多try catch。如果还没有出现信息。我判断不是应用层面的了，也不是.NET Framework层面了。

从错误信息看，与ntdll.dll有关。我建议你找个Win7环境，装上开发环境然后再试试。不行的话，用Win7编译，然后给客户部署尝试。

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[已处理] Text Control在修改HypertextLink的值时程序崩溃e

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活字格认证