小编Eya*_*yal的帖子

我想控制何时回复错误消息和成功消息,但我总是收到错误消息:

这是我想要做的:

 $.ajax({
                type: "POST",
                data: formData,
                url: "/Forms/GetJobData",
                dataType: 'json',
                contentType: false,
                processData: false,

                success: function (response) {                    
                   alert("success!") 
                },
                error: function (response) {
                   alert("error") // I'm always get this.
                }

            });

控制器:

         [HttpPost]
            public ActionResult GetJobData(Jobs jobData)
            {

              var mimeType = jobData.File.ContentType;
              var isFileSupported = AllowedMimeTypes(mimeType);

             if (!isFileSupported){        
                     //  Error
                    Response.StatusCode = (int)HttpStatusCode.BadRequest;
                    return Content("The attached file is not supported", MediaTypeNames.Text.Plain);    
             }
            else
              {
                    //  Success
                    Response.StatusCode = (int)HttpStatusCode.OK;
                    return Content("Message sent!", MediaTypeNames.Text.Plain);     

               }   

            }

我有一个包含大量字符串的日志文件.我想从这个文件(查找和替换),除了开头的任何字符串删除一切:phone=与结束Digits=1

例如: phone=97212345678&step=1&digits=1

要找到我正在使用的字符串(phone=.*digits=1),它的工作原理!但我没有找到正则表达式选择除了这个字符串之外的一切,并清除它们.

样本文件.

我试图将文件上传到Linux服务器,但我收到一个错误说:" Unable to connect to the remote server".我不知道我的代码是错还是连接被服务器阻止 - 我可以用FileZilla连接服务器.

我的代码:

    const string UserName = "userName";
    const string Password = "password";
    const string ServerIp = "11.22.333.444/";

    public bool UploadFile(HttpPostedFileBase file)
    {
        string fileName = file.FileName;

        var serverUri = new Uri("ftp://" + ServerIp + fileName);


        // the serverUri should start with the ftp:// scheme.
        if (serverUri.Scheme != Uri.UriSchemeFtp)
            return false;

        try
        {
            // get the object used to communicate with the server.
            var request = (FtpWebRequest)WebRequest.Create(serverUri);

            request.EnableSsl = true;
            request.UsePassive …

如何在IHostingEnvironment不在构造函数中启动它的情况下使用该 接口？

我的Startup.cs:

public Startup(IHostingEnvironment env)
{
    var builder = new ConfigurationBuilder()
        .SetBasePath(env.ContentRootPath)
        .AddJsonFile("appsettings.json", optional: true, reloadOnChange: true)
        .AddJsonFile($"appsettings.{env.EnvironmentName}.json", optional: true)
        .AddEnvironmentVariables();

    if (env.IsDevelopment())
    {
        // This will push telemetry data through Application Insights pipeline faster, allowing you to view results immediately.
        builder.AddApplicationInsightsSettings(developerMode: true);
    }
    Configuration = builder.Build();
}

我的课:

public class FileReader
{
    // I don't want to initiate within a constructor

    public string ReadFile(string fileName)
    {
       // this is wrong! how can I use it?
       var …

我创建了一个信息栏,我想用组件中的信息更新一个区域.我把它作为孩子添加App.vue:

<template>
  <div id="app">
    <InfoBar />  // my info-bar
    <router-view/>
  </div>
</template>

为了能够<InfoBar />从其他组件更新m ,我决定尝试使用Vuex并使用mutations更改信息:

Vuex商店:

   export const store = new Vuex.Store({
        state:{
            infoBarText: "Text from Vuex store" ,  // initial text for debugging         
        },
        mutations:{
            setInfoBarText(state,text){
                state.infoBarText = text;
            }
        }

infobar.vue

<template>
  <div>
    {{infoString}} // the result is always "Text from Vuex store"
  </div>
</template>

<script>
export default {
  name: "infoBar",
  data() {
    return {
      infoString: this.$store.state.infoBarText      
    }
  }

现在,我想使用其他组件的Vuex变异更新文本: …

我试图将两个参数发布到以下函数,但我没有设法达到该函数:

public void SetShopSubCategories([FromBody]string userId, int []subCategories )
{

}

这是我发布的方式:

var subCategories = [ 1, 2, 3, 4, 5];
var userId = "123";

            $.ajax({
                type: "POST",
                url: "/Category/SetShopSubCategories/",
                contentType: 'application/json; charset=utf-8',
                data: JSON.stringify(userId, subCategories),
                success: function () {
                    alert("OK");
                },
                error: function () {
                    alert("error");
                }

当我只用一个参数发布时,它很顺利,我可以达到这个功能:

public void SetShopSubCategories([FromBody]string userId )
{

}

var userId = "123";

        $.ajax({
            type: "POST",
            url: "/Category/SetShopSubCategories/",
            contentType: 'application/json; charset=utf-8',
            data: JSON.stringify(userId, subCategories),
            success: function () {
                alert("OK");
            },
            error: function () { …

我有两张桌子:

请求:

 RequestID | Msg
----------------
    5  | abc
    6  | def
    7  | ghi
    8  | jkl

RequestStatus:

RequestStatusID | RequestID |StatusID
-------------------------------------
        1             5         1
        2             8         2

• 并非每个请求都有记录 RequestStatus

我需要表中的所有记录,Request除非StatusID = 2.(requestID=8应该过滤掉)

我LEFT OUTER JOIN用来接收表中的记录,Request但当我添加Where子句时(Where StatusID = 1),它当然不起作用.

我的SQL Server 2014连接字符串是:

Data Source=localhost;Initial Catalog=myDb;Integrated Security=True;

我需要在同一台服务器上安装新的SQL Server 2016实例.因此,我需要修改现有的连接字符串并添加实例名称.

我正在尝试(MSSQLSERVER是实例名称):

"Data Source=localhost\MSSQLSERVER;Initial Catalog=myDb;Integrated Security=True;" providerName="System.Data.SqlClient" 

和:

"Server=localhost/MSSQLSERVER;Database=myDb;User Id=user; Password=password;" providerName="System.Data.SqlClient"

更多,但无法使其工作.

我得到的错误是:

找不到网络名称

有没有办法使绑定工作与字符串格式？

    <asp:TemplateField HeaderText="Price" >
          <EditItemTemplate>

              <asp:TextBox ID="txtPrice" runat="server" Text='<%# String.Foramt("{0:#,###}",Bind("Price")) %>' />

          </EditItemTemplate>

我试图使用正则表达式匹配引号,但我没有设法逃避它们@string- 我收到一个错误:

output = Regex.Replace(str, @"[\d-']", string.Empty);    // valid

output = Regex.Replace(str, @"[\d-'\"]", string.Empty);  // not valid!

这个也行不通:

string str = "[\d-'\"]" // bad compile constant value!

我的查询需要帮助:

当我向查询发送值为-1的参数时,我想获取所有记录(此参数不会过滤结果),否则根据值进行过滤.

我正在尝试这样的事情:

WHERE  (StatusId = CASE WHEN @StatusId = - 1 
        THEN 
        @StatusId IS NULL 
        ELSE 
        StatusId = @StatusId   END)

谢谢.

我需要选择table1.cloumn它的值何时包含一个值table2.column

我在尝试这个:

select * from Products1 where sku like '%' + (select sku from Products2) + '%' 

我正试图从webForms转移到Asp.net-MVC并遇到一些问题.我试图弄清楚为什么这不起作用,我收到此错误:" 对象引用未设置为对象的实例 "

我有课程'Pages':

namespace _2send.Model
{   
    public class Pages
    {        
        public string PageContent { get; set; }        
        public string PageName { get; set; }       
        public int LanguageId { get; set; }      
    }    
}

我正在使用此类将值插入'Pages.PageContent'属性:

namespace _2send.Model.Services
{
    public class PagesService : IPagesService
    {
        public void GetFooterlinksPage()
        {

            DB_utilities db_util = new DB_utilities();           
            SqlDataReader dr;

            Pages pages = new Pages();

            using (dr = db_util.procSelect("[Pages_GetPageData]"))
            {
                if (dr.HasRows)
                {
                    dr.Read();
                    pages.PageContent = (string)dr["PageContent"];
                    dr.Close();
                }                
            }

        }

Controller方法如下所示:

private IPagesService _pagesService; …