拔出&插入USB webCame [英] unplug & plug USB webCame

问题描述

嗨 我正在尝试使用C#代码重置USB网络摄像头，我在Google上搜索了很多文章，但没有得到任何有用的解决方案

这是我的代码:

System.Management.ObjectQuery objectQuery = new System.Management.ObjectQuery("select * from CIM_LogicalDevice ");
            
            // search and get the list
            System.Management.ManagementObjectSearcher searcher = new System.Management.ManagementObjectSearcher(objectQuery);
            System.Management.ManagementObjectCollection list = searcher.Get();
           
            // step through the list of devices
            label1.Text = list.Count.ToString();
                        
            foreach (System.Management.ManagementObject item in list)
            {
                listBox1.Items.Add(item.GetText(TextFormat.Mof));
                if (item.GetPropertyValue("caption").ToString().Contains("USB PC Camera"))
                {
                   
                    item.InvokeMethod("Reset", null);
                }
            }

到达零件item.InvokeMethod("Reset", null);
时，总是会给我一个错误 它说:This method is not implemented in any class
请任何帮助
谢谢

解决方案

您必须使用..正确的WebCam Driver dll文件，并在项目中使用该dll ..并使用该dll的方法.

hi I''m trying to reset my USB web-came using c# code,and I googled a lot of articles but didn''t get any useful solution

here''s my code:

System.Management.ObjectQuery objectQuery = new System.Management.ObjectQuery("select * from CIM_LogicalDevice ");
            
            // search and get the list
            System.Management.ManagementObjectSearcher searcher = new System.Management.ManagementObjectSearcher(objectQuery);
            System.Management.ManagementObjectCollection list = searcher.Get();
           
            // step through the list of devices
            label1.Text = list.Count.ToString();
                        
            foreach (System.Management.ManagementObject item in list)
            {
                listBox1.Items.Add(item.GetText(TextFormat.Mof));
                if (item.GetPropertyValue("caption").ToString().Contains("USB PC Camera"))
                {
                   
                    item.InvokeMethod("Reset", null);
                }
            }

it always give me an error when it get to the part item.InvokeMethod("Reset", null);
it says: This method is not implemented in any class
please any help
thank you

解决方案

You Have to use .. Proper WebCam Driver dll file and use that dll in your project .. and consume that dll''s methods.

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