无法将字符串转换为char [英] Cannot convert string to char

问题描述

大家好，我创建了一个运行命令提示符命令的winform应用程序，但问题是我收到错误如无法将字符串转换为字符串这一行psi = new ProcessStartInfo（TextBox1 .Text.Split（）（0），TextBox1.Text.Split（）（1））;任何人都可以帮助我
 
我也试过
 psi = new ProcessStartInfo（TextBox1.Text.Split（''）（0），TextBox1.Text.Split（''）（1））; 
然后我收到错误，如方法名称预期 
 
请帮助解决此错误以及如何在该拆分中添加空格。

我尝试过：

使用系统; 
使用System.Collections; 
使用System.Collections.Generic; 
使用System.Diagnostics; 
 public partial class Form1：Form 
 {
 private ProcessStartInfo psi; 
 private Process cmd; 
 private delegate void InvokeWithString（string text）; 
 private void Button1_Click（System.Object sender，System.EventArgs e）
 {
 try {
 cmd.Kill（）; 
} catch（Exception ex）{
} 
 TextBox2.Clear（）; 
 if（TextBox1.Text.Contains（））{
 psi = new ProcessStartInfo（TextBox1.Text.Split（）（0），TextBox1.Text。拆分（）（1））; 
} else {
 psi = new ProcessStartInfo（TextBox1.Text）; 
} 
 System.Text.Encoding systemencoding = default（System.Text.Encoding）; 
 System.Text.Encoding.GetEncoding（Globalization.CultureInfo.CurrentUICulture.TextInfo.OEMCodePage）; 
 var _with1 = psi; 
 _with1.UseShellExecute = false; 
 _with1.RedirectStandardError = true; 
 _with1.RedirectStandardOutput = true; 
 _with1.RedirectStandardInput = true; 
 _with1.CreateNoWindow = true; 
 _with1.StandardOutputEncoding = systemencoding; 
 _with1.StandardErrorEncoding = systemencoding; 
 cmd = new Process {
 StartInfo = psi，
 EnableRaisingEvents = true 
}; 
 cmd.ErrorDataReceived + = Async_Data_Received; 
 cmd.OutputDataReceived + = Async_Data_Received; 
 cmd.Start（）; 
 cmd.BeginOutputReadLine（）; 
 cmd.BeginErrorReadLine（）; 
} 
 private void Async_Data_Received（object sender，DataReceivedEventArgs e）
 {
 this.Invoke（new InvokeWithString（Sync_Output），e.Data）; 
} 
 private void Sync_Output（string text）
 {
 TextBox2.AppendText（text + Environment.NewLine）; 
 TextBox2.ScrollToCaret（）; 
} 
} 

解决方案

string.Split（）返回一个数组，你应该这样做：

  var  arr = TextBox1.Text.Split（< span class =code-string>' '）; 
 psi =  new  ProcessStartInfo（arr [ 0 ]，arr [ 1 ]）; 

您需要传递char数组或字符串数​​组以进行拆分，并使用索引访问数组方括号而不是弯曲的。

 TextBox1.Text.Split（new char [] {''}）[0] 

Hi everybody, i have created a winform application which run Command Prompt Commands but the problems is  i am getting an error Like "Cannot Convert string to char" in this line " psi = new ProcessStartInfo(TextBox1.Text.Split(" ")(0), TextBox1.Text.Split(" ")(1)); "  Can anybody please help me
 
I also tried 
psi = new ProcessStartInfo(TextBox1.Text.Split(' ')(0), TextBox1.Text.Split(' ')(1));
then i am getting error like Method Name Expected

Please help with this error and how add whitespace in that split.

What I have tried:

using System;
using System.Collections;
using System.Collections.Generic;
using System.Diagnostics;
public partial class Form1:Form
{
private ProcessStartInfo psi;
private Process cmd;
private delegate void InvokeWithString(string text);
private void Button1_Click(System.Object sender, System.EventArgs e)
{
try {
cmd.Kill();
} catch (Exception ex) {
}
TextBox2.Clear();
if (TextBox1.Text.Contains(" ")) {
psi = new ProcessStartInfo(TextBox1.Text.Split(" ")(0), TextBox1.Text.Split(" ")(1));
} else {
psi = new ProcessStartInfo(TextBox1.Text);
}
System.Text.Encoding systemencoding = default(System.Text.Encoding);
System.Text.Encoding.GetEncoding(Globalization.CultureInfo.CurrentUICulture.TextInfo.OEMCodePage);
var _with1 = psi;
_with1.UseShellExecute = false;
_with1.RedirectStandardError = true;
_with1.RedirectStandardOutput = true;
_with1.RedirectStandardInput = true;
_with1.CreateNoWindow = true;
_with1.StandardOutputEncoding = systemencoding;
_with1.StandardErrorEncoding = systemencoding;
cmd = new Process {
StartInfo = psi,
EnableRaisingEvents = true
};
cmd.ErrorDataReceived += Async_Data_Received;
cmd.OutputDataReceived += Async_Data_Received;
cmd.Start();
cmd.BeginOutputReadLine();
cmd.BeginErrorReadLine();
}
private void Async_Data_Received(object sender, DataReceivedEventArgs e)
{
this.Invoke(new InvokeWithString(Sync_Output), e.Data);
}
private void Sync_Output(string text)
{
TextBox2.AppendText(text + Environment.NewLine);
TextBox2.ScrollToCaret();
}
}

解决方案

string.Split() returns an array so you should do:

var arr = TextBox1.Text.Split(' ');
psi = new ProcessStartInfo(arr[0], arr[1]);

You need to pass a char array or string array to split, and you access arrays by index using square brackets rather than curved ones.

TextBox1.Text.Split(new char[]{' '})[0]

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