小编Son*_*nül的帖子

private void ProcessInfo()
        {
            string ffMPEG = System.IO.Path.Combine(Application.StartupPath, "ffMPEG.exe");
            System.Diagnostics.Process mProcess = null;

            System.IO.StreamReader SROutput = null;
            string outPut = "";

            string filepath = "D:\\source.mp4";
            string param = string.Format("-i \"{0}\"", filepath);

            System.Diagnostics.ProcessStartInfo oInfo = null;

            System.Text.RegularExpressions.Regex re = null;
            System.Text.RegularExpressions.Match m = null;
            TimeSpan Duration = 0;

            //Get ready with ProcessStartInfo
            oInfo = new System.Diagnostics.ProcessStartInfo(ffMPEG, param);
            oInfo.CreateNoWindow = true;

            //ffMPEG uses StandardError for its output.
            oInfo.RedirectStandardError = true;
            oInfo.WindowStyle = System.Diagnostics.ProcessWindowStyle.Hidden;          
            oInfo.UseShellExecute = false;

            // Lets start the process

            mProcess …

使用@但仍然是错误:

有谁知道为什么这一行:

String[] values = Regex.Split(line, @",(?! [\w\d\.\[\]\(\)\#\*\-_])(?=([^\"]*\"[^\"]*\")*[^\"]*$)");

错误CS1002; 预期InsertLogtoDatabase D:\ MyProjects\InsertLogWindowsApp\WindowsFormsApplication1\LogOrderi2trade.cs 119

严重级代码说明项目文件行错误CS1003语法错误,','期望InsertLogtoDatabase D:\ MyProjects\InsertLogWindowsApp\WindowsFormsApplication1\LogOrderi2trade.cs 119

这是我得到的例外:

System.Runtime.InteropServices.COMException(0x800A03EC):来自HRESULT的异常:0x800A03EC

at System.RuntimeType.ForwardCallToInvokeMember(String memberName,BindingFlags flags,Object target,Int32 [] aWrapperTypes,MessageData&msgData)
at Microsoft.Office.Interop.Excel.Range.set_Formula(Object value)

我的代码看起来像这样:

Range rng = activeWorksheet.get_Range("A1");
rng.Formula = "=SUM(A4*C4;A5*C5;A6*C6;A7*C7)/SUM(A4:A7)";

每当我运行此代码时,我都会得到前面提到的异常.但是,当我运行此代码时:

Range rng = activeWorksheet.get_Range("A1");
rng.Formula = "=SUM(A4:A7)/4"

这非常有效.没有例外.

我检查了两个公式,它们在我的Excel中完美运行.我试过设置:

Application.Calculation = XlCalculation.xlCalculationAutomatic;

这根本没有帮助,我一直在谷歌搜索这个解决方案,并没有找到任何有用的东西.有没有人知道可能有什么问题？

我想将字符串转换为int.我有像这样的字符串值"45,454,566.00".虽然类型转换抛出错误

输入字符串的格式不正确

int GrandTotalInWords = Int32.Parse(grandtotal);//error
grandTotalInWords.InnerHtml = ConvertNumbertoWords(GrandTotalInWords);

我想将dd/MM/YYYY格式化的字符串日期转换为YYYY-MM-dd日期时间.但它回到我身边

"字符串未被识别为有效的DateTime."

如何将"04/26/2016"字符串转换为yyyy-MM-dd日期时间格式？

 DateTime dt = DateTime.ParseExact("04/26/2016", "yyyy-MM-dd", CultureInfo.InvariantCulture);
 Console.WriteLine(dt);

我想将MM/YY格式化的字符串日期转换为mm-yy DateTime.并设置为rad蒙版编辑框的值.但它回到我身边

"字符串未被识别为有效的DateTime."

我试过了

DateTime dt = DateTime.ParseExact("11/17", "MMyy", CultureInfo.InvariantCulture);

对于例如,我想转换03/16和radmasked编辑框的设定值伪装成MMyy如03-16

正在网上寻找计算增值税的方法，但似乎找不到。

decimal subTotal = FinalInvoice.Hold_Back_Value;
decimal VAT = //calculate vat at 20% for subtotal using helper method
decimal TOTAL = subtotal + VAT;

    s = "delete MAX(id) from emp";

    cmd = new SqlCommand(s, con);

    cmd.ExecuteNonQuery();

    GridView1.DataBind();

错误:'('附近的语法不正确.

当我尝试在运行时错误显示上面执行此查询....enter code here

我正在尝试使用StreamWriter指定存储创建文件的位置:

string getCurrentPath = Environment.CurrentDirectory;
StreamWriter writeFile = new StreamWriter(@"" +getCurrentPath + "\\NDependProject\\OceanAPIDependencies.xml");
writeFile.Close();

我收到此错误消息:

    Unhandled Exception: System.IO.DirectoryNotFoundException: Could not find a part
 of the path 'D:\Project_Summer\ExtensionDirectoryTraversal\ExtensionDirectoryTr
aversal\bin\Debug\NDependProject\OceanAPIDependencies.xml'.
   at System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath)
   at System.IO.FileStream.Init(String path, FileMode mode, FileAccess access, I
nt32 rights, Boolean useRights, FileShare share, Int32 bufferSize, FileOptions o
ptions, SECURITY_ATTRIBUTES secAttrs, String msgPath, Boolean bFromProxy, Boolea
n useLongPath, Boolean checkHost)
   at System.IO.FileStream..ctor(String path, FileMode mode, FileAccess access,
FileShare share, Int32 bufferSize, FileOptions options, String msgPath, Boolean
bFromProxy, …

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我在我的应用程序中有登录页面,因为我已将我的指定ID保存在Cookies中

Response.Cookies["DesignationID"].Value = ds.Tables[0].Rows[0]["DesignationID"].ToString();

在用户登录之后在另一个页面中我想要检索该cookie值,所以我编写了类似的代码

if (Convert.ToInt32(Request.Cookies["DesignationID"].Value = 2))

但它显示错误,如不能隐式将类型'int'转换为'string'c#,红色虚线在2以下...所以请给我一些提示......