check if file is image

Tag: c#,asp.net,asp.net-mvc

I want to check if file is image. and then you will see a link where you can see the image. But the link only has to appear if file is link. I try it like this:

if (!String.IsNullOrEmpty(item.FileName)) {
    var file = item.FileName;
    string[] formats = new string[] { ".jpg", ".png", ".gif", ".jpeg" };
    if (file == null || file.Contains(formats)) {
        viewLink = false;
        @Html.DisplayFor(modelItem => item.FileName)
        <em>(@Resources.Entity.Environment.Removed)</em>
    }
    else {
        @*@Html.DisplayFor(modelItem => modelItem.Id )*@
        <a href="@Url.Action("Details", "FormLibrary", new { id = item.FileName})"><i class="fa fa-fw fa-external-link-square text-info"></i></a>
    }
}

But I get this error:

 if (file == null || file.Contains(formats)) {

Best How To :

You can't do this:

string.Contains(string array)

Instead you have to rewrite that line of code to this:

if (file == null || formats.Any(f => file.Contains(f)))

And this can be shortened down to:

if (file == null || formats.Any(file.Contains))

Load XML to list using LINQ [duplicate]

c#,xml,linq

Make a base class which will have id,x,y,z, and have Vendors,Bankers and Hospitals extend it. Then you can have a collection of the base class, and add to it the classes that inherit from it....

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c#,regex

Just get the dot outside of the captruing group and then make it as optional. @"[+-]?\d+\.?\d*" Use anchors if necessary. @"^[+-]?\d+\.?\d*$" ...

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c#,asp.net,active-directory

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c#,asynchronous,task,cancellationtokensource,cancellation-token

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c#,oop,architecture,software-design,code-design

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c#,xml

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c#,.net,windows,sendkeys

I believe you need to use: SendKeys.SendWait("^(s)"); Instead of: SendKeys.SendWait("^%s?"); Have a look at https://msdn.microsoft.com/en-us/library/system.windows.forms.sendkeys.send(v=vs.110).aspx for more information....

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c#,asp.net,sql-server,date,gridview-sorting

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check if file is image

c#,asp.net,asp.net-mvc

You can't do this: string.Contains(string array) Instead you have to rewrite that line of code to this: if (file == null || formats.Any(f => file.Contains(f))) And this can be shortened down to: if (file == null || formats.Any(file.Contains)) ...

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c#,wpf,binding

I managed to get it working using an IMultiValueConverter like this: public class BorderCollectionConverter : IMultiValueConverter { public object Convert(object[] values, Type targetType, object parameter, System.Globalization.CultureInfo culture) { var borderCollection = new BorderCollection(); borderCollection.AddRange(values.OfType<Border>()); return borderCollection; } public object[] ConvertBack(object value, Type[] targetTypes, object parameter, System.Globalization.CultureInfo culture) { throw new...

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c#,xaml,styles,wpf-controls

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c#,data-access-layer,bll

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c#,.net,linq,grid,devexpress

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c#,design-patterns,cqrs,command-query-separation

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c#,pervasive

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c#,multithreading,file-search

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c#,wpf,xaml,canvas

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c#,linq,list,updates

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c#,asp.net,asp.net-mvc,json.net

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c#,reflection,custom-attributes,spring.net

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c#,linq

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asp.net,architecture,wcfserviceclient

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c#,xml,xpath,xmldocument,xmlnodelist

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c#,.net,visual-studio-2013,.net-framework-version

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c#,xml,foreach

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c#,bouncycastle,portable-class-library

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c#,sql,sql-server,database

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c#,.net,regex,string,replace

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c#,asp.net,.net,entity-framework,entity-framework-6

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c#,.net

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c#,xml,linq,xpath,linq-to-xml

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c#,mysql

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c#,wpf,idataerrorinfo

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c#,.net,types,casting

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c#,xaml,windows-phone

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asp.net,ssl,https

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