ASP.NET

Re: Visual Studio Update 15.5.0 - MVC View editor comes up with just black text

7-Dec-17 13:38

Not sure where to place this post.
I took the update a couple of days ago for VS2017 V15.5.0
My VS2017 was working fine for over a year and this update changed something, and I can't pinpoint it.
So I work on the old style MVC projects, where you have a Views, Controllers, etc. and the views went black and white, no intelisense.
Then on the create project, it no longer shows under website, MVC. It only shows Core.
The VS2017 installation always bombs on a DISM file called netfxextension-aspnet45 and says it doesn't exist.
I'm not sure if my VS2017 is broke or if my Win10 is broken.

Just wanted to see if anyone else has ran into this and a point in the right direction to fix it.

If it ain't broke don't fix it

Richard Deeming8-Dec-17 1:28

Re: Visual Studio Update 15.5.0 - MVC View editor comes up with just black text

8-Dec-17 1:28

Sounds like Visual Studio's broken. Try the "repair" option in the installer. If that doesn't work, try the "modify" option and verify that the relevant parts are installed.

"These people looked deep within my soul and assigned me a number based on the order in which I joined."
- Homer

jkirkerx8-Dec-17 6:20

Re: Visual Studio Update 15.5.0 - MVC View editor comes up with just black text

8-Dec-17 6:20

I've done that like 5 times yesterday.
I think that the templates I'm looking for can be downloaded, in which I tried yesterday. But it failed to install because netfx4extendable-aspnet45 count not be located.
So today I will focus on finding that feature and install it.
I think the Win10 team and VS team have a conflict here.

If it ain't broke don't fix it

jkirkerx10-Dec-17 10:33

Consuming a homemade rest service in asp.net webform

10-Dec-17 10:33

I finally fixed it and it works great now.
It was a Windows 10 problem. Guess the last big update broke it.
So I had to create a installation disk and do sort of a clean install.
Now my VS2017 15.5.1 works and all the project templates are there now.
And the Views have intellisense and color now. Go Figure, spent 2 days thinking it was VS2017

If it ain't broke don't fix it

wilcodk7-Dec-17 2:47

wilcodk

7-Dec-17 2:47

Hi

I've created my own rest service. For test purpose i've used Soap UI for testing of the service.

Now i try to consume this service in a webform. On the controller i can see that it has processed a call, so the service request gets through to my service. By debugging i can see that the rest server gets the data from the database.

When i try consuming the service in a asp.net 4.5 webform it hangs...

it just hangs on this statement

var response = await client.GetAsync("ServerConfig");

My request code looks like this:

private WebApiClientOptions options = new WebApiClientOptions("http://localhost:54990/api", "ServerConfig");

    protected void Page_Load(object sender, EventArgs e)
    {
        List<ServerConfig> list = null;

        list = this.Index().Result;
      
    }

    public async Task<List<ServerConfig>> Index()
    {
        List<ServerConfig> list = null;

        using (WebApiClient<ServerConfig> client = new WebApiClient<ServerConfig>(options))
        {
            var liste = await client.GetManyAsync();

        }

        return list;
    }

i hope there is a clever person WHO can help a complete newbiee

Yours

Wilco

Re: Consuming a homemade rest service in asp.net webform

Richard Deeming7-Dec-17 8:54

Re: Consuming a homemade rest service in asp.net webform

7-Dec-17 8:54

You have a classic deadlock.

await signs the rest of the method up to run as a continuation when the awaited task completes. By default, it will be scheduled to run in the same execution context as the caller.

Calling .Result on a task blocks the current thread until the task has completed. But the task can't complete until the continuation has run on the current execution context. Which can't happen until the current thread is un-blocked. Which can't happen until the task has completed.

The quick-and-dirty fix is to add .ConfigureAwait(false) to your awaited tasks. That allows the continuation to run on a different thread:

var liste = await client.GetManyAsync().ConfigureAwait(false);

The best solution would be to move your work to a proper task-returning async method, and register that as an async task:

private void Page_Load(object sender, EventArgs e)
{
    RegisterAsyncTask(new PageAsyncTask(LoadAsync));
}

private async Task LoadAsync()
{
    List<ServerConfig> list = await Index();
    ...
}

Using Asynchronous Methods in ASP.NET 4.5[^]

"These people looked deep within my soul and assigned me a number based on the order in which I joined."
- Homer

wilcodk7-Dec-17 22:20

wilcodk

7-Dec-17 22:20

Thanks

I got the registerAsyncTask to Work Smile | :)

Yours

Wilco

Populating pdf on the server

Michael Clinton6-Dec-17 7:49

Michael Clinton

6-Dec-17 7:49

I have a process that populates a pdf template based on user input. Can the system handle multiple users filling out web form and populate pdf template and save the populate pdf into a different directory.

I am using Itextsharp. We are using one pdf template to create the pdfs. Should I put the PDF template in the database and load it into my program as a blob?

Thanks,
mjc

Re: Populating pdf on the server

Richard Deeming6-Dec-17 9:43

How to disable gridview by checkbox?

6-Dec-17 9:43

Michael Clinton wrote:
Can the system handle multiple users filling out web form and populate pdf template and save the populate pdf into a different directory.

Almost certainly, although it's hard to tell without seeing your code.

I do something very similar using PDFSharp without any problems. So long as you're using FileShare.Read when you open the file, other threads and processes should be able to read it at the same time.

"These people looked deep within my soul and assigned me a number based on the order in which I joined."
- Homer

samflex4-Dec-17 7:56

samflex

4-Dec-17 7:56

Greetings again experts,

I have seven gridview controls, Gridview1 through Gridview7.

For now, I am posting below the code for two of the seven gridview controls.

PHP

<asp:gridview ID="Gridview1" gridlines="None" runat="server" ShowFooter="true" AutoGenerateColumns="false" onrowdatabound="Gridview1_RowDataBound" OnRowDeleting="Gridview1_RowDeleting">
  <Columns>
  <asp:BoundField DataField="RowNumber" Visible="false" HeaderText="Row Number" />
  <asp:TemplateField HeaderText="Name">
   <headerstyle horizontalalign="Left" />
      <ItemTemplate>
          <asp:TextBox ID="txtsourcename" placeholder="Name..." runat="server" style="width:250px;" class="form-control"></asp:TextBox>
      </ItemTemplate>
  </asp:TemplateField>
  <asp:TemplateField HeaderText="Address">
  <ItemStyle HorizontalAlign="Left"></ItemStyle>
      <ItemTemplate>
          <asp:TextBox ID="txtsourceaddress" placeholder="Address..." runat="server" style="width:250px;" class="form-control"></asp:TextBox>
      </ItemTemplate>
  </asp:TemplateField>
  <asp:TemplateField HeaderText="Income">
  <ItemStyle HorizontalAlign="Left"></ItemStyle>
      <ItemTemplate>
           <asp:TextBox ID="txtsourceincome" placeholder="Income...(example: 1000)" runat="server" style="width:250px;" class="form-control txtsourceincome numeric"></asp:TextBox>
      </ItemTemplate>
             </asp:TemplateField>
  <asp:TemplateField HeaderText="">
      <ItemTemplate>
       <asp:Button ID="ButtonAdd" runat="server" Text="Add"
              onclick="ButtonAdd_Click" CssClass="grvAddButton" OnClientClick="return ValidateEmptyValue();" />
      </ItemTemplate>
  </asp:TemplateField>
 <asp:CommandField ShowDeleteButton="True"><ControlStyle CssClass="grvDelButton" /></asp:CommandField>
  </Columns>
</asp:gridview>
  <span style="font-weight:bold;font-size:18px;color:#000000;">Name and address of income source of spouse greater than $1,000.00 (No comma (,)  or period(.); Example 1000)</span><br /><br />
  <asp:gridview ID="Gridview1" GridLines="None" runat="server" ShowFooter="true" AutoGenerateColumns="false" onrowdatabound="gGridview1_RowDataBound" OnRowDeleting="Gridview1_RowDeleting">
  <Columns>
  <asp:BoundField DataField="SpouseNumber" Visible="false" HeaderText="Row Number" />
  <asp:TemplateField HeaderText="Name">
  <headerstyle horizontalalign="Left" />
      <ItemTemplate>
          <asp:TextBox ID="txtspousename" placeholder="Name..." runat="server" style="width:250px;" class="form-control"></asp:TextBox>
      </ItemTemplate>
  </asp:TemplateField>
  <asp:TemplateField HeaderText="Address">
  <ItemStyle HorizontalAlign="Left"></ItemStyle>
      <ItemTemplate>
          <asp:TextBox ID="txtspouseaddress" placeholder="Address..." runat="server" style="width:250px;" class="form-control"></asp:TextBox>
      </ItemTemplate>
  </asp:TemplateField>
  <asp:TemplateField HeaderText="Income">
  <ItemStyle HorizontalAlign="Left"></ItemStyle>
      <ItemTemplate>
           <asp:TextBox ID="txtspouseincome" placeholder="Income...(example: 1000)" runat="server" style="width:250px;" class="form-control txtsourceincome numeric"></asp:TextBox>
      </ItemTemplate>
 </asp:TemplateField>
  <asp:TemplateField HeaderText="">
      <ItemTemplate>
       <asp:Button ID="ButtonAdd2" runat="server" Text="Add"
              onclick="ButtonAdd2_Click" CssClass="grvAddButton" OnClientClick="return ValidateSPEmptyValue();" />
      </ItemTemplate>
  </asp:TemplateField>
 <asp:CommandField ShowDeleteButton="True"><ControlStyle CssClass="grvDelButton" /></asp:CommandField>
  </Columns>
</asp:gridview>

Our requirement is that each gridview control must have a checkbox next to it.

Users are asked to fill all the textboxes in each gridview control.

However, if user does not see the need to complete the textboxes in any particular gridview control, then we need to have user check a box next to each gridview control to disable that gridview control.

If any gridview is not completed and a box is not checked, an error needs to be raised and user should not be allowed to submit the form.
Does anyone know to do this?

Thanks in advance

jkirkerx4-Dec-17 8:02

4-Dec-17 8:02

It should just be as simple as a checkbox with auto postback, that triggers code wired to an event handler for the checkbox
and then say Gridview1.Disable

I've never done it personally with a gridview, but the control should have the disable feature, or visible and just make it disappear.

If it ain't broke don't fix it

samflex4-Dec-17 8:48

samflex

4-Dec-17 8:48

First of all, thanks a lot for your response.

If you have not done it with Gridview, especially when you have to make sure that user cannot submit without either completing the textboxes for a particular view or checking a box next to a particular gridview, then you can't it is simple.

jkirkerx4-Dec-17 10:11

4-Dec-17 10:11

All the .Net stock controls for WebForms follow the same format. I've done it in code behind using server controls in pure code, but have never done it in code behind using the control on a web form. But it should be the same thing.

If it ain't broke don't fix it

How can I use CimCredential in Web Page to get Printer Status ?

samflex4-Dec-17 10:32

samflex

4-Dec-17 10:32

I have done it too.

It is much different with Gridview, Repeater, etc.

That's why I am struggling with it.

David Mujica28-Nov-17 7:31

David Mujica

28-Nov-17 7:31

I have successfully implemented code which uses ManagementObjectSearcher to query and return the status of printers on one of our servers.

Now what I would like to do is use this code from an ASP.net web page so that my user community can view the status of those same printers. The problem is that the account that the webserver executes as does not have the appropriate permissions to retrieve the data.

My research seems to point to a method to get the data where I would pass credentials while executing the query.

The building blocks are:

1) Dim Credentials As New CimCredential(PasswordAuthenticationMechanism.Default, domain, username, securepassword)

2) Session = CimSession.Create(computer, SessionOptions)

3) session.QueryInstances("@root\cimv2", "WQL", "SELECT * FROM Win32_Printer")

However, I can't seem to find the proper reference to the Microsoft.Management.Infrastructure.dll

My development environment is VS2015 / Win10 and I plan to deploy the web application to a 7.5 IIS server.

Can someone help me find the correct dll location ?
Am I approaching this problem correctly ?

Thanks.

Re: How can I use CimCredential in Web Page to get Printer Status ?

Richard Deeming28-Nov-17 8:36

Re: How can I use CimCredential in Web Page to get Printer Status ?

28-Nov-17 8:36

According to this thread[^], it should be in:

C:\Program Files (x86)\Reference Assemblies\Microsoft\WMI\v1.0

"These people looked deep within my soul and assigned me a number based on the order in which I joined."
- Homer

David Mujica28-Nov-17 8:39

David Mujica

28-Nov-17 8:39

Yea, I saw that reference too. Unfortunately, that path does not exist on my Win10 machine.

Am I missing a feature?

Re: How can I use CimCredential in Web Page to get Printer Status ?

Richard Deeming28-Nov-17 8:48

IIS Rewrite rule: Attach country code with all hyperlinks in page

28-Nov-17 8:48

It looks like it's part of one of the Windows SDKs - either 8 or 10 should do.
Windows 10 SDK - Windows app development[^]

"These people looked deep within my soul and assigned me a number based on the order in which I joined."
- Homer

Mou_kol23-Nov-17 0:53

Mou_kol

23-Nov-17 0:53

i have developed a web site with asp.net webform. i hosted the site my pc local iis. when i browser the site the url appear in my browser address bar looks like http://localhost:8800/gb/default.aspx

now my default.aspx page has many hyperlinks and those links look likes

http://localhost:53741/
http://localhost:53741/About.aspx
http://localhost:53741/Contact.aspx

now i want to attach country code taken from browser address bar url with all the links in default.aspx page. so after attaching the new url will be looking like

http://localhost:53741/gb
http://localhost:53741/gb/About.aspx
http://localhost:53741/gb/Contact.aspx
so i test a outbound rule to attach country code with all the links in my default.aspx page.

my outbound rule look like....a screen shot attached.

screen shot 1

enter image description here[^]

screen shot 2

enter image description here[^]

screen shot 3

enter image description here[^]

after implementing my outbound rule when i am browsing my site then getting error due to outbound rule. i am weak in iis rewrite rule. may some where i made mistake but could not figure out my mistake. so please some one help me to fix this issue.

again i am telling what i am trying to do. when i am browsing my site then my address bar url look like http://localhost:8800/gb/default.aspx in this url there is a country code that is gb.

the country code i need to take from there with outbound rule and attach that country code with all the hyperlinks in default.aspx page. so my all hyperlinks in default.aspx page will be looking like below example.

http://localhost:53741/gb
http://localhost:53741/gb/About.aspx
http://localhost:53741/gb/Contact.aspx
this iis rewrite rule i tried

XML

<outboundRules>
    <rule name="add outbound rule" preCondition="Ishtml" enabled="true" stopProcessing="true">
        <match filterByTags="A" pattern="([a-z]{2}/(.*))" negate="true" />
        <action type="Rewrite" value="gb/{R:2}" />
    </rule>
    <preConditions>
        <preCondition name="Ishtml">
            <add input="{RESPONSE_CONTENT_TYPE}" pattern="text/html" />
        </preCondition>
    </preConditions>
</outboundRules>

after applying the above rule i am getting error and error as follows

Parser Error Description: An error occurred during the parsing of a resource required to service this request. Please review the following specific parse error details and modify your source file appropriately.

Parser Error Message: The content in the application file is not valid.
if still my objective not clear to anyone then please ask me. if anyone understand what i am trying to do then please help me to achieve my goal. thanks

[REPOST] IIS Rewrite rule: Attach country code with all hyperlinks in page

Richard Deeming23-Nov-17 1:01