How to handle a controller result that returns a file in ASP.NET MVC

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0
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I have a controller that returns a file like this :

byte fileBytes=System.IO.File.ReadAllBytes(Path.Combine(Server.MapPath("~/Images/"), photoPath));

            string fileName = prop;

            return File(fileBytes, System.Net.Mime.MediaTypeNames.Application.Octet, fileName);

I can display it in HTML image like this

<div class="col-md-6"><img src="@("File/Download?id="+ Model.ID+"&prop=photo")" alt="Image" /></div>

I want to create a link using that controller, so that when user clicks it, it will show the image :

    <div class="col-md-4"><a @(Model.path == null ? Html.ActionLink("click here", "Download", "File", new { appid = Model.ID.ToString(), prop = "photo" }, null) : Html.ActionLink("none", "", ""))</a></div>

asked Nov 7 at 19:19

jason

1,5522169122

add a comment |

up vote
0
down vote

favorite

I have a controller that returns a file like this :

byte fileBytes=System.IO.File.ReadAllBytes(Path.Combine(Server.MapPath("~/Images/"), photoPath));

            string fileName = prop;

            return File(fileBytes, System.Net.Mime.MediaTypeNames.Application.Octet, fileName);

I can display it in HTML image like this

<div class="col-md-6"><img src="@("File/Download?id="+ Model.ID+"&prop=photo")" alt="Image" /></div>

I want to create a link using that controller, so that when user clicks it, it will show the image :

    <div class="col-md-4"><a @(Model.path == null ? Html.ActionLink("click here", "Download", "File", new { appid = Model.ID.ToString(), prop = "photo" }, null) : Html.ActionLink("none", "", ""))</a></div>

asked Nov 7 at 19:19

jason

1,5522169122

add a comment |

up vote
0
down vote

favorite

I have a controller that returns a file like this :

byte fileBytes=System.IO.File.ReadAllBytes(Path.Combine(Server.MapPath("~/Images/"), photoPath));

            string fileName = prop;

            return File(fileBytes, System.Net.Mime.MediaTypeNames.Application.Octet, fileName);

I can display it in HTML image like this

<div class="col-md-6"><img src="@("File/Download?id="+ Model.ID+"&prop=photo")" alt="Image" /></div>

I want to create a link using that controller, so that when user clicks it, it will show the image :

    <div class="col-md-4"><a @(Model.path == null ? Html.ActionLink("click here", "Download", "File", new { appid = Model.ID.ToString(), prop = "photo" }, null) : Html.ActionLink("none", "", ""))</a></div>

asked Nov 7 at 19:19

jason

1,5522169122

I have a controller that returns a file like this :

byte fileBytes=System.IO.File.ReadAllBytes(Path.Combine(Server.MapPath("~/Images/"), photoPath));

            string fileName = prop;

            return File(fileBytes, System.Net.Mime.MediaTypeNames.Application.Octet, fileName);

I can display it in HTML image like this

<div class="col-md-6"><img src="@("File/Download?id="+ Model.ID+"&prop=photo")" alt="Image" /></div>

I want to create a link using that controller, so that when user clicks it, it will show the image :

    <div class="col-md-4"><a @(Model.path == null ? Html.ActionLink("click here", "Download", "File", new { appid = Model.ID.ToString(), prop = "photo" }, null) : Html.ActionLink("none", "", ""))</a></div>

html css asp.net asp.net-mvc razor

asked Nov 7 at 19:19

jason

1,5522169122

asked Nov 7 at 19:19

jason

1,5522169122

asked Nov 7 at 19:19

jason

1,5522169122

asked Nov 7 at 19:19

jason

1,5522169122

asked Nov 7 at 19:19

jason

1,5522169122

add a comment |

1 Answer
1

active

oldest

votes

up vote
0
down vote

accepted

The Html.ActionLink helper method will generate HTML markup for the anchor tag. Does not make sense to call it inside the opening a tag

A simple If condition can do.

<div class="col-md-4">

  @if(Model.path == null)

  {

      @Html.ActionLink("click here", "Download", "File", 

                                     new { appid = Model.ID, prop = "photo" }, null); 

  }

  else

  {

    <span>Nothing to download or even another link you can use here</span>

  }

</div>

edited Nov 7 at 19:35

answered Nov 7 at 19:27

Shyju

142k86328433

It worked but the downloaded file type looks like a generic file. How can I make it specific like .pdf or .jpg? How should I modify the controller? Thanks for the answer.
– jason
Nov 7 at 19:35

You need to fix your action method to send the correct content/mime type.For the image, get the content type using MimeMapping.GetMimeMapping(fileName); method and use that. Refer the GetFile method in this answer
– Shyju
Nov 7 at 19:37

add a comment |

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1 Answer
1

active

oldest

votes

1 Answer
1

active

oldest

votes

up vote
0
down vote

accepted

The Html.ActionLink helper method will generate HTML markup for the anchor tag. Does not make sense to call it inside the opening a tag

A simple If condition can do.

<div class="col-md-4">

  @if(Model.path == null)

  {

      @Html.ActionLink("click here", "Download", "File", 

                                     new { appid = Model.ID, prop = "photo" }, null); 

  }

  else

  {

    <span>Nothing to download or even another link you can use here</span>

  }

</div>

edited Nov 7 at 19:35

answered Nov 7 at 19:27

Shyju

142k86328433

It worked but the downloaded file type looks like a generic file. How can I make it specific like .pdf or .jpg? How should I modify the controller? Thanks for the answer.
– jason
Nov 7 at 19:35

You need to fix your action method to send the correct content/mime type.For the image, get the content type using MimeMapping.GetMimeMapping(fileName); method and use that. Refer the GetFile method in this answer
– Shyju
Nov 7 at 19:37

add a comment |

up vote
0
down vote

accepted

The Html.ActionLink helper method will generate HTML markup for the anchor tag. Does not make sense to call it inside the opening a tag

A simple If condition can do.

<div class="col-md-4">

  @if(Model.path == null)

  {

      @Html.ActionLink("click here", "Download", "File", 

                                     new { appid = Model.ID, prop = "photo" }, null); 

  }

  else

  {

    <span>Nothing to download or even another link you can use here</span>

  }

</div>

edited Nov 7 at 19:35

answered Nov 7 at 19:27

Shyju

142k86328433

It worked but the downloaded file type looks like a generic file. How can I make it specific like .pdf or .jpg? How should I modify the controller? Thanks for the answer.
– jason
Nov 7 at 19:35

You need to fix your action method to send the correct content/mime type.For the image, get the content type using MimeMapping.GetMimeMapping(fileName); method and use that. Refer the GetFile method in this answer
– Shyju
Nov 7 at 19:37

add a comment |

up vote
0
down vote

accepted

The Html.ActionLink helper method will generate HTML markup for the anchor tag. Does not make sense to call it inside the opening a tag

A simple If condition can do.

<div class="col-md-4">

  @if(Model.path == null)

  {

      @Html.ActionLink("click here", "Download", "File", 

                                     new { appid = Model.ID, prop = "photo" }, null); 

  }

  else

  {

    <span>Nothing to download or even another link you can use here</span>

  }

</div>

edited Nov 7 at 19:35

answered Nov 7 at 19:27

Shyju

142k86328433

The Html.ActionLink helper method will generate HTML markup for the anchor tag. Does not make sense to call it inside the opening a tag

A simple If condition can do.

<div class="col-md-4">

  @if(Model.path == null)

  {

      @Html.ActionLink("click here", "Download", "File", 

                                     new { appid = Model.ID, prop = "photo" }, null); 

  }

  else

  {

    <span>Nothing to download or even another link you can use here</span>

  }

</div>

edited Nov 7 at 19:35

answered Nov 7 at 19:27

Shyju

142k86328433

edited Nov 7 at 19:35

answered Nov 7 at 19:27

Shyju

142k86328433

answered Nov 7 at 19:27

Shyju

142k86328433

answered Nov 7 at 19:27

Shyju

142k86328433

It worked but the downloaded file type looks like a generic file. How can I make it specific like .pdf or .jpg? How should I modify the controller? Thanks for the answer.
– jason
Nov 7 at 19:35

You need to fix your action method to send the correct content/mime type.For the image, get the content type using MimeMapping.GetMimeMapping(fileName); method and use that. Refer the GetFile method in this answer
– Shyju
Nov 7 at 19:37

add a comment |

It worked but the downloaded file type looks like a generic file. How can I make it specific like .pdf or .jpg? How should I modify the controller? Thanks for the answer.
– jason
Nov 7 at 19:35

You need to fix your action method to send the correct content/mime type.For the image, get the content type using MimeMapping.GetMimeMapping(fileName); method and use that. Refer the GetFile method in this answer
– Shyju
Nov 7 at 19:37

It worked but the downloaded file type looks like a generic file. How can I make it specific like .pdf or .jpg? How should I modify the controller? Thanks for the answer.
– jason
Nov 7 at 19:35

You need to fix your action method to send the correct content/mime type.For the image, get the content type using MimeMapping.GetMimeMapping(fileName); method and use that. Refer the GetFile method in this answer
– Shyju
Nov 7 at 19:37

add a comment |

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