大家好，背景:
我正在使用带有 OpenFileDialog、FileBrowserDialog 的 C# 开发一个 WinForms 应用程序，它将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:我应该添加什么使用指令或程序集引用来防止这些错误？
谢谢!
这是 MainForm.CS 文件中的代码:
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
最佳答案
解决您的错误
sourceFileOpenFileDialog.FileNames 无法将类型“字符串 []”隐式转换为“字符串”
您需要更改此部分，您正在尝试将字符串数组插入字符串(.Text)
using (myStream)
{
// change FileNames to FileName
textBoxSourceFiles.Text = sourceFileOpenFileDialog.FileName;
}
也许遍历 FileNames 数组并将字符串连接在一起放入.Text？
对于“.SelectedFiles”和“.SelectedPath”的问题，这些不是openFileDialog的属性，所以这就是它提示的原因..
同样，您可以使用“.FileNames”来获取在对话框中选择的文件(如果您只允许一个选择，则可以使用“.FileName”)
与 sOut 和 服务端 您在流程的后期设置它们并在您的最终声明中清理它们，可能发生的情况是如果流程在您到达您的
StreamReader sOut = covertFilesProcess.StandardOutput;
StreamReader sErr = covertFilesProcess.StandardError;
那么当你点击finally时，它不知道是什么 sOut 和 服务端 关闭是，因为它们还没有被制造出来。
关于C# - WinForms 应用程序上的 StreamReader SecurityException 处理 OpenFileDialog 相关错误，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/5378122/