Question

我有一个Winforms应用程序，通过它的API调用CorelDraw，然后在保存之前对图像进行一些处理。我尝试使用Threads，BackgroundWorker和继承BackgroundWorker但允许Thread.Abort的类来设置它。我完成这项工作的每一种方式，我都会遇到两个问题之一。线程不在后台运行，在这种情况下我无法按下表单上的任何按钮，因为它被冻结或线程在后台运行但在我第一次调用CorelDraw时立即停止处理任何内容。

有没有替代解决方案？我们处理这个问题的旧方法是让一个观察者WinForm产生另一个Process()，它将在CorelDraw中完成所有工作。使用Process（）调用的进程将重要信息保存到.txt文件中以供父进程检查，如果子进程在同一图像上工作的时间过长，则父进程会调用Kill()。到目前为止，这是一种笨重且容易出错的方式，这就是为什么我在寻找更好的解决方案。

Answer 1

设计师代码：

makefile();

这是表格代码：

namespace Tasks
{
    partial class Form1
    {
        /// <summary>
        /// Required designer variable.
        /// </summary>
        private System.ComponentModel.IContainer components = null;

        /// <summary>
        /// Clean up any resources being used.
        /// </summary>
        /// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
        protected override void Dispose(bool disposing)
        {
            if (disposing && (components != null))
            {
                components.Dispose();
            }
            base.Dispose(disposing);
        }

        #region Windows Form Designer generated code

        /// <summary>
        /// Required method for Designer support - do not modify
        /// the contents of this method with the code editor.
        /// </summary>
        private void InitializeComponent()
        {
            this.button1 = new System.Windows.Forms.Button();
            this.button2 = new System.Windows.Forms.Button();
            this.SuspendLayout();
            // 
            // button1
            // 
            this.button1.Location = new System.Drawing.Point(41, 43);
            this.button1.Name = "button1";
            this.button1.Size = new System.Drawing.Size(75, 23);
            this.button1.TabIndex = 0;
            this.button1.Text = "button1";
            this.button1.UseVisualStyleBackColor = true;
            this.button1.Click += new System.EventHandler(this.button1_Click);
            // 
            // button2
            // 
            this.button2.Location = new System.Drawing.Point(131, 43);
            this.button2.Name = "button2";
            this.button2.Size = new System.Drawing.Size(75, 23);
            this.button2.TabIndex = 1;
            this.button2.Text = "button2";
            this.button2.UseVisualStyleBackColor = true;
            this.button2.Click += new System.EventHandler(this.button2_Click);
            // 
            // Form1
            // 
            this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
            this.ClientSize = new System.Drawing.Size(240, 116);
            this.Controls.Add(this.button2);
            this.Controls.Add(this.button1);
            this.Name = "Form1";
            this.Text = "Form1";
            this.ResumeLayout(false);

        }

        #endregion

        private System.Windows.Forms.Button button1;
        private System.Windows.Forms.Button button2;
    }
}

如果您创建异步任务，则可以在后台运行Corel应用程序，然后在关闭时将完成任务。我在那里添加了额外的东西，如Progress和cts用于取消父窗口关闭时的任务。

Winform with Active UI和1 Thread在后台运行

1 个答案: