有谁知道为什么会发生这种情况？相同的代码在不同的PC上不起作用？这可能是PostgreSQL问题吗？

问题描述

| 嗨，我已经在C＃中使用以下代码在Postgresql中进行数据库备份。单击备份按钮时将运行此代码

private void lnkSCBackup_LinkClicked(object sender,LinkLabelLinkClickedEventArgs e)
{
 SaveFileDialog save = new SaveFileDialog();              
 save.Filter = \"Postgre backups (*.backup)|*.backup\";      
 save.ShowDialog();       
 if (save.FileName != \"\")    
 {  
                string saveFileName = \"\\\"\" + save.FileName + \"\\\"\";  
                string host =  S ystem.Configuration.ConfigurationSettings.AppSettings[\"HOST\"].ToString().Trim();  
                string port = System.Configuration.ConfigurationSettings.AppSettings[\"PORT\"].ToString().Trim();  
                string userName = System.Configuration.ConfigurationSettings.AppSettings[\"USERNAME\"].ToString().Trim();  
                string password = System.Configuration.ConfigurationSettings.AppSettings[\"PASSWORD\"].ToString().Trim();  
                string dataBase = System.Configuration.ConfigurationSettings.AppSettings[\"DATABASE\"].ToString().Trim();
try 
                {
                    string Creten = \"pg_dump -h \" + host + \" -U \" + userName + \" -p \" + port + \" -F c -b -v \" + dataBase + \" > \" + saveFileName;

                    try
                    {
                        // create the processstartinfo using \"cmd\" as the program to be run,// and \"/c \" as the parameters.
                        // Incidentally,/c tells cmd that we want it to execute the command that follows,// and then exit.
                        System.Diagnostics.processstartinfo procStartInfo =
                                               new System.Diagnostics.processstartinfo(\"cmd\",\"/c \" + Creten);

                        // The following commands are needed to redirect the standard output.
                        // This means that it will be redirected to the Process.StandardOutput StreamReader.
                        procStartInfo.RedirectStandardOutput = true;
                        procStartInfo.UseShellExecute = false;
                        // Do not create the black window.
                        procStartInfo.CreateNowindow = true;
                        // Now we create a process,assign its processstartinfo and start it
                        System.Diagnostics.Process proc = new System.Diagnostics.Process();
                        proc.StartInfo = procStartInfo;
                        proc.Start();
                        proc.WaitForExit();
                        // Get the output into a string
                        string result = proc.StandardOutput.ReadToEnd();
                        //Gets the total processing time for this particular process
                        string totalProcessingTime = proc.TotalProcessorTime.Ticks.ToString();
                        //progress bar working                       
                        progressBar1.Visible = true;
                        progressBar1.BringToFront();
                        progressBar1.Minimum = 0;
                        progressBar1.Maximum = int.Parse(totalProcessingTime);
                        progressBar1.Step = 500;
                        progressBar1.Value = 0;
                        this.lblBackup.Visible = true;
                        this.lblBackup.Text = \"backing Up Database\";//To show the user it is backing up
                        this.lblBackup.Font = new Font(\"Microsoft Sans Serif\",9,System.Drawing.FontStyle.Regular);
                        this.Refresh();
                        while (progressBar1.Value < progressBar1.Maximum)
                        {
                            progressBar1.Value += 10;//= 10000;
                        }
                        progressBar1.Visible = false;
                        this.lblBackup.Visible = false;
                        int exitCode = proc.ExitCode;
                        if (exitCode.Equals(0))
                        {
                            MessageBox.Show(\"             Backup Success            \");
                        }
                        else
                        {
                            MessageBox.Show(\"           Backup not Success          \");
                        }

                    }
                    catch (Exception objException)
                    {
                        // Log the exception
                    }
                }

现在我的问题是这部分代码在我的系统中可以正常工作，并且备份已正确进行。 但是在另一个系统中不起作用，它最终出现并卡在语句中

string result = proc.StandardOutput.ReadToEnd();

有谁知道为什么会发生这种情况？相同的代码在不同的PC上不起作用？这可能是Postgresql问题吗 提前致谢！！！！     

解决方法

\“相同的代码不能在不同的PC \'S \”工作并不奇怪，因为不同的计算机可以具有不同的环境。一方面，您正在调用系统命令

pg_dump -h \" + host + \" -U \" + userName + \" -p \" + port + \" -F c -b -v \" + dataBase 

您检查过它是否可以在第二台机器上工作吗？ （即pg_dump在您的路径中，您可以使用这些参数连接到pg DB）？