C# 运行时发生System.InvalidOperationException错误__fswrite.readtimeout' threw an exception of type '

在调试程序时，在以下句子出现错误

private void th()
        {
            Speech speech = new Speech();
            speech.Save("1.mp3",textBox1.Text, trackBar1.Value, trackBar2.Value);
        }
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错误提示：
System.InvalidOperationException:“Cross-thread operation not valid: Control ‘trackBar1’ accessed from a thread other than the thread it was created on.”

解决方法有两种：
1、在程序初始化模块

        public Form1()
        {
            InitializeComponent();
        }
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输入以下语句：

CheckForIllegalCrossThreadCalls = false;
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2、将出错语句放在下面代码的大括号里

this.BeginInvoke(new Action(delegate()
                {
                
                }));
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