C#-StreamReader安全异常处理WinForms应用程序上与OpenFileDialog相关的错误
大家好，背景： 我正在使用C#开发一个WinForms应用程序，它带有一个OpenFileDialog，FileBrowserDialog，可以使用命令行可执行文件将多个文件从excel转换为1个csv文件 错误：我应该使用什么指令或程序集引用来防止这些错误C#-StreamReader安全异常处理WinForms应用程序上与OpenFileDialog相关的错误,c#,winforms,error-handling,streamreader,openfiledialog,C#,Winforms,Error Handling,Streamreader,Openfiledialog,大家好，背景： 我正在使用C#开发一个WinForms应用程序，它带有一个OpenFileDialog，FileBrowserDialog，可以使用命令行可执行文件将多个文件从excel转换为1个csv文件 错误：我应该使用什么指令或程序集引用来防止这些错误 当前上下文中不存在“sOut” 当前上下文中不存在“sErr” “sourceFileOpenFileDialog.SelectedFiles”不包含“SelectedFiles”的定义，并且找不到接受system.windows.for
- 当前上下文中不存在“sOut”
- 当前上下文中不存在“sErr”
- “sourceFileOpenFileDialog.SelectedFiles”不包含“SelectedFiles”的定义，并且找不到接受system.windows.forms.openfiledialog类型的第一个参数的扩展方法（是否缺少using指令或程序集引用？）
- “sourceFileOpenFileDialog.SelectedPath”不包含“SelectedPath”的定义，并且找不到接受system.windows.forms.openfiledialog类型的第一个参数的扩展方法（是否缺少using指令或程序集引用？）
- 找不到“SecurityException”（是否缺少using指令或程序集引用？）
- 找不到“进程”（是否缺少using指令或程序集引用？）
- 找不到“文件名”（是否缺少using指令或程序集引用？）
- “sourceFileOpenFileDialog.FileNames”无法将类型“string[]”隐式转换为“string”
using System;
using System.ComponentModel;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Threading;
using System.IO;
using System.Diagnostics;
using System.Security;
// Select Source Files Button
private void sourceFiles_Click(object sender, EventArgs e)
{
Stream myStream = null;
OpenFileDialog openFileDialog1 = new OpenFileDialog();
this.sourceFileOpenFileDialog.InitialDirectory = "i:\\CommissisionReconciliation\\Review\\";
this.sourceFileOpenFileDialog.Filter = "Excel Files (*.xls;*.xlsx;)|*.xls;*.xlsx;|All Files (*.*)|*.*";
this.sourceFileOpenFileDialog.FilterIndex = 2;
this.sourceFileOpenFileDialog.RestoreDirectory = true;
this.sourceFileOpenFileDialog.Multiselect = true;
this.sourceFileOpenFileDialog.Title = "Excel File Browser";
DialogResult dr = this.sourceFileOpenFileDialog.ShowDialog();
if (dr == System.Windows.Forms.DialogResult.OK)
{
string consolidatedFolder = targetFolderBrowserDialog.SelectedPath;
// Read the files
foreach (String file in sourceFileOpenFileDialog.FileNames)
{
try
{
// Copy each selected xlsx files into the specified TargetFolder
System.IO.File.Copy(fileName, consolidatedFolder + @"\" + System.IO.Path.GetFileName(fileName));
// Convert each selected XLSX File to CSV Using the command prompt
// [I:\CommissisionReconciliation\App\ConvertExcel\ConvertExcelTo.exe ^ .XLS file location ^ filename.csv]
// example: ConvertExcelTo.exe ^ I:\CommissisionReconciliation\ Review\_Consolidated\ALH\2011-350-00-600070-
// 03-09alh-AMLHS of Florida.xlsx ^ 2011-350-00-600070-03-09alh-AMLHS of Florida.csv
Process convertFilesProcess = new Process();
// command prompt execution
convertFilesProcess.StartInfo.WorkingDirectory = "I:\\CommissisionReconciliation\\App\\ConvertExcel\\";
convertFilesProcess.StartInfo.FileName = "ConvertExcelTo.exe";
convertFilesProcess.StartInfo.Arguments = " ^ " + targetFolderBrowserDialog.SelectedPath + "^" + csvFileName + ".csv";
convertFilesProcess.StartInfo.UseShellExecute = true;
convertFilesProcess.StartInfo.CreateNoWindow = true;
convertFilesProcess.StartInfo.RedirectStandardOutput = true;
convertFilesProcess.StartInfo.RedirectStandardError = true;
convertFilesProcess.Start();
StreamReader sOut = convertFilesProcess.StandardOutput;
StreamReader sErr = convertFilesProcess.StandardError;
}
catch (SecurityException ex)
{
// The user lacks appropriate permissions to read files, discover paths, etc.
MessageBox.Show("Security error. The user lacks appropriate permissions to read files, discover paths, etc. Please contact your administrator for details.\n\n" +
"Error message: " + ex.Message + "\n\n" +);
}
catch (Exception ex)
{
// Could not load the image - probably related to Windows file system permissions.
MessageBox.Show("Cannot display the image: " + file.Substring(file.LastIndexOf('\\'))
+ ". You may not have permission to read the file, or " +
"it may be corrupt.\n\nReported error: " + ex.Message);
}
finally
{
Stream sOut
.Close();
sErr.Close();
}
try
{
// Combine all .csv files into 1 csv file using the command prompt
// [.csv File location: Copy *.csv ^ filename.csv]
// example: [.CSV I:\CommissisionReconciliation\ Review\_Consolidated\ALH\: Copy *.csv
// ^2011-350-00-600070-03-09alh-AMLHS of Florida.csv)
Process consolidateFilesProcess = new Process();
// substring function to take off the extension from sourceFileOpenFileDialog.FileName
// int csvFileName.Length = sourceFileOpenFileDialog.FileName.Length - 3;
consolidateFilesProcess.StartInfo.WorkingDirectory = "I:\\CommissisionReconciliation\\App\\ConvertExcel\\";
consolidateFilesProcess.StartInfo.FileName = "ConvertExcelTo.exe";
consolidateFilesProcess.StartInfo.Arguments = " .CSV " + " ^ " + targetFolderBrowserDialog.SelectedPath + ": Copy *.csv ^" + csvFileName+ ".csv";
consolidateFilesProcess.StartInfo.UseShellExecute = false;
consolidateFilesProcess.StartInfo.CreateNoWindow = true;
consolidateFilesProcess.StartInfo.RedirectStandardOutput = true;
consolidateFilesProcess.StartInfo.RedirectStandardError = true;
consolidateFilesProcess.Start();
StreamReader sOut = consolidateFilesProcess.StandardOutput;
StreamReader sErr = consolidateFilesProcess.StandardError;
}
catch (SecurityException ex)
{
// The user lacks appropriate permissions to read files, discover paths, etc.
MessageBox.Show("Security error. The user lacks appropriate permissions to read files, discover paths, etc. Please contact your administrator for details.\n\n" +
"Error message: " + ex.Message + "\n\n" +);
}
catch (Exception ex)
{
// Could not load the image - probably related to Windows file system permissions.
MessageBox.Show("Cannot display the image: " + file.Substring(file.LastIndexOf('\\'))
+ ". You may not have permission to read the file, or " +
"it may be corrupt.\n\nReported error: " + ex.Message);
}
finally
{
sOut.Close();
sErr.Close();
}
} // ends foreach (String file in openFileDialog1.FileNames)
} // ends if (dr == System.Windows.Forms.DialogResult.OK)
if (sourceFileOpenFileDialog.ShowDialog() == DialogResult.OK)
{
try
{
if ((myStream = sourceFileOpenFileDialog.OpenFile()) != null)
{
using (myStream)
{
textBoxSourceFiles.Text = sourceFileOpenFileDialog.FileNames;
}
}
}
catch (Exception ex)
{
MessageBox.Show("Error: Could not read file from disk. Original error: " + ex.Message);
}
}
if (sourceFileOpenFileDialog.ShowDialog() == DialogResult.OK)
{
Log("Source Files: " + sourceFileOpenFileDialog.SelectedFiles);
}
textBoxSourceFiles.Text = sourceFileOpenFileDialog.SelectedFiles;
} // ends selectFilesButton_Click method
// Source Folder Path Click Button
StreamReader sOut = covertFilesProcess.StandardOutput;
StreamReader sErr = covertFilesProcess.StandardError;
然后，当您点击finally时，它不知道要关闭的sOut和sErr是什么，因为它们从未创建过。修复了以下错误：
- 通过添加，找不到“SecurityException”（是否缺少using指令或程序集引用？）
using System.Security; - 无法通过添加以下内容找到“进程”（是否缺少using指令或程序集引用？）
using System.Diagnostics; - 通过更改为sourceFileOpenFileDialog.fileName，找不到“文件名”（是否缺少using指令或程序集引用？）
System.IO.File.Copy(sourceFileOpenFileDialog.FileName, consolidatedFolder + @"\" + System.IO.Path.GetFileName(sourceFileOpenFileDialog.FileName));textBoxSourceFiles.Text = sourceFileOpenFileDialog.FileName; - “sourceFileOpenFileDialog.FileNames”无法通过更改为sourceFileOpenFileDialog.FileName将类型“string[]”隐式转换为“string”
System.IO.File.Copy(sourceFileOpenFileDialog.FileName, consolidatedFolder + @"\" + System.IO.Path.GetFileName(sourceFileOpenFileDialog.FileName));textBoxSourceFiles.Text = sourceFileOpenFileDialog.FileName; - “sOut”和“sErr”在当前上下文中不存在，通过如下更改结束语句的位置进行修复。我不确定这是否会打乱异常捕获程序，但我们将看到：
StreamReader sOut = consolidateFilesProcess.StandardOutput; StreamReader sErr = consolidateFilesProcess.StandardError; sOut.Close(); sErr.Close(); - “sourceFileOpenFileDialog.SelectedFiles”不包含“SelectedFiles”的定义，并且找不到接受system.windows.forms.openfiledialog类型的第一个参数的扩展方法（是否缺少using指令或程序集引用？）。通过将SelectedFiles更改为文件名修复：
// Text box value declarataions private void textBoxSourceFiles_TextChanged(object sender, EventArgs e) { sourceFileOpenFileDialog.FileName = textBoxSourceFiles.Text; }
if (sourceFileOpenFileDialog.ShowDialog() == DialogResult.OK)
{
try
{
if ((myStream = sourceFileOpenFileDialog.OpenFile()) != null)
{
using (myStream)
{
textBoxSourceFiles.Text = sourceFileOpenFileDialog.FileName;
}
}
}
修复错误：找不到“进程”（是否缺少using指令或程序集引用？）；已修复错误：找不到“SecurityException”（是否缺少using指令或程序集引用？）w/正在使用System.Security；修复了更改为sourceFileOpenFileDialog时找不到“文件名”（是否缺少using指令或程序集引用？）。文件名我们将再给您一个小时左右的时间。来吧，hans solo，我不想花几个小时调试，谢谢您的回复！您能否编辑您的答案以包含正确的代码？我应该使用哪些正确的属性来引用在openFileDialog中选择的路径和文件？如何修复代码中的sOut进程……我应该使用以下字符串directoryPath=Path.GetDirectoryName（filePath）？