ASP.NET MVC custom routing with default route

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  But here I only logged in to the mail accounts which are hotmail.com, outlook.com. I could not log in to all the mail accounts I requested. For example, I had to log in to the example.com account. I need to use the exchange server API. But I have no idea how to do it. I would be glad if you help.
• ASP.NET DevExpress Gridview update operation

  net devexpress controls. First i tried to implement this edit command on gridview. Everything seems fine but only one problem i got is when i tried to click edit link a popup forms comes out in which i can not type inside the box. Finally, when i click on "Update" button an error comes out says "Object reference not set to an instance of an object." Please help me out this situation where did i make mistake. Thanking you.

  <%@ Register assembly="DevExpress.Web.v17.1, Version=17.1.3.0, Culture=neutral, PublicKeyToken=b88d1754d700e49a" namespace="DevExpress.Web" tagprefix="dx" %>
  
  
  <asp:Content runat="server" ID="BodyContent1" ContentPlaceHolderID="ContentPlaceHolder1">
  
  <dx:ASPxGridView ID="GridView1" runat="server" ClientInstanceName="GridView1"
          KeyFieldName="TestConfigId" AutoGenerateColumns="False" Width="850px"            
          OnRowUpdating="Gridview1_RowUpdating" >
  <Columns>             
              <dx:GridViewDataTextColumn Caption="TestConfigId" FieldName="TestConfigId" Name="TestConfigId" Visible="true" VisibleIndex="0">
              </dx:GridViewDataTextColumn>
              <dx:GridViewDataTextColumn Caption="Main Test" FieldName="MainTest" Name="MainTest" Settings-AllowSort="False" VisibleIndex="1" >
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              <dx:GridViewDataTextColumn Caption="Sub Test" FieldName="SubTest" Name="SubTest" Settings-AllowSort="False" VisibleIndex="2" >
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          <Settings HorizontalScrollBarMode="Visible"/>
          <SettingsBehavior AutoExpandAllGroups="true"/>
          <SettingsBehavior AllowFocusedRow="True"/>
          <SettingsResizing ColumnResizeMode="NextColumn"/>
  
  <Styles>
              <FixedColumn BackColor="LightYellow"></FixedColumn>
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          <Settings ShowStatusBar="Visible" />
          <SettingsEditing Mode="PopupEditForm" />
      </dx:ASPxGridView>
      <dx:ASPxPopupControl ID="popupSample" runat="server" ShowCloseButton="true" ShowHeader="true" 
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  Code Behind file

   protected void Gridview1_RowUpdating(object sender, ASPxDataUpdatingEventArgs e)
  {
      SqlConnection con = new SqlConnection(constr);
      SqlCommand cmd = new SqlCommand();
      cmd.CommandType = CommandType.StoredProcedure;
      cmd.CommandText = "update_test_configuration";
      cmd.Parameters.Add("@TestConfigId", SqlDbType.Int).Value = Convert.ToInt32(e.NewValues["TestConfigId"]);       
      cmd.Parameters.Add("@MainTest", SqlDbType.NVarChar).Value = e.NewValues["MainTest"].ToString();
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  cmd.ExecuteNonQuery();
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  Stored Procedure

  CREATE PROCEDURE [dbo].[update_test_configuration]
  @TestConfigId int = 0,
  @MainTest nvarchar(100),
  @SubTest nvarchar(100)
  
  AS
  
  BEGIN
  
    SET NOCOUNT ON;
  
    UPDATE    dbo.TestConfigMaster 
  
    SET       MainTest    = @MainTest,
              SubTest     =@SubTest
  
      WHERE   TestConfigId = @TestConfigId                
  END
  
• http post request converts parameters to 'Null' in ASP NET MVC

  Consider the Following Scenario and Code Snippets. This questioned based on the technologies ASP.NET MVC, Angular 1.x, JS, Jquery.

  Consider there's a text box, has properties id = "textExample" ng-model = "exampleText". I am gonna send the text box input to the controller from the view, according MVC architecture. So for this task I used following code snippets.

  (A)

  $http ({
  // Rest is avoided for now //
  data : $.param({'Test_Code' : $scope.exampleText})
  }).then() ---
  

  (B)

  $http({
  data : "sendingData"
  }).then ({})
  

  (C)

  $http ({
  data : ({'Test_Code' : $scope.exampleText})
  })
  

  (D)

  $http({
  data : $("#textExample").val()
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  (E)

  var testExample = $scope.exampleText ; // $scope.exampleText == 'XYZ' 
  
  $http ({
  data : ({'Test_Code' : testExample  })
  })
  

  After running the application, I checked each function at the Front End ( google Developers Console ) , then It hits with the parameter I am trying to send. Receiving result at the Back End/ Controller Side, ASP NET MVC Controller, POST request

  (A) --> Value is Null
  (B) --> Value is "sendingData" 
  (C) --> Value is Null
  (D) --> Value is Null
  (E) --> Value is 'XYZ'
  

  The main problem I found ( As I see ) is that even though every 5 functions get the parameter, it changes the values when it is sent to the Controller. But Hardcoded Parameters are not changed (B). Sometime one of those above techniques can be successful if other one doesn't. So, can somebody explain me why this kind of things happen ? or what are the bad practices um using
• Call controller method using ajax

  I have a simpli list view for tasks:

  @foreach (var item in Model) {
      <tr>
          <td>
              @Html.DisplayFor(modelItem => item.TaskText)
          </td>
          <td>
              @Html.DisplayFor(modelItem => item.TillDate)
          </td>
          <td>
              @Html.EnumDropDownListFor(modelItem => item.State)
          </td>
          <td>
              @Html.ActionLink("Edit", "Edit", new { id=item.Id }) |
              @Html.ActionLink("Delete", "Delete", new { id = item.Id })
          </td>
      </tr>
  }
  

  I want to call my edit post method of controller when I change EnumDropDownList value using ajax, to change task state, but I can't figure out how to this.

  My controller Edit method:

      [HttpPost]
      public ActionResult Edit(Task task)
      {
          context.EditTask(task);
          return View(task);
      }
  

  How can I do this?
• When will i use "Model" instead of any variable such as (m) in mvc view

  My controller code; PatientController.cs

  public ActionResult Edit(int? id)
     {            
          Patient patient = db.Patients.Find(id);            
          return View(patient); 
     }
  

  My View code; Edit.cshtml

  @model PatientChart.Models.Patient
  <div class="form-group">
          @Html.LabelFor(m=> m.Name, new { @class = "control-label col-md-2" })
          <div class="col-md-10">
              @Html.EditorFor(m=> m.Name)
              @Html.ValidationMessageFor(m=> m.Name)
          </div>
      </div>
  

  output: name1

  Why we do not use (Model => Model.Name) instead of (m=>m.Name)? When Will i have to use "Model" instead of "m" or any other variable?
• Pass drop down list value to model

  I have a simple list view with list of tasks.

  @foreach (var item in Model) {
      <tr>
          <td>
              @Html.DisplayFor(modelItem => item.TaskText)
          </td>
          <td>
              @Html.DisplayFor(modelItem => item.TillDate)
          </td>
          <td>
              @Html.ActionLink("Edit", "Edit", new { id=item.Id }) |
              @Html.ActionLink("Delete", "Delete", new { id = item.Id })
              <select id="TaskState">
                  <option>Active</option>
                  <option>Stoped</option>
                  <option>Complete</option>
              </select>
          </td>
      </tr>
  }
  

  And class for Task:

  public class Task
  {
      public int Id { get; set; }
      public string TaskText { get; set; }
      public DateTime TillDate { get; set; }
      public TaskState State { get; set; }
  }
  
  public enum TaskState
  {
      Active=1,
      Stoped,
      Complete
  }
  

  Now, I want to change Task state by selecting it from drop down list, but can't figure out how to conect it with model. How can I do it?