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))

deployment of a site asp.net and iis

c#,asp.net,iis

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C# Code design / Seperate classes for each TabControl

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

Place a UserControl on each tab.

Convert Date Time to IST

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c#,xml,foreach

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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#,wpf,idataerrorinfo

You can implement your OptionalPhoneAttribute based on the original PhoneAttribute: public sealed class OptionalPhoneAttribute : ValidationAttribute { public override bool IsValid(object value) { var phone = new PhoneAttribute(); //return true when the value is null or empty //return original IsValid value only when value is not null or empty return...

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

Does the assemblyBinding tag have proper xmlns schema? Check if the issue you are encountering is same as Assembly binding redirect does not work

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

Cancellation in .Net is cooperative. That means that the one holding the CancellationTokenSource signals cancellation and the one holding the CancellationToken needs to check whether cancellation was signaled (either by polling the CancellationToken or by registering a delegate to run when it is signaled). In your Task.Run you use the...

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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,windows-phone

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c#,string,immutability,method-chaining

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

If you have obtained the Assembly, you can just iterate over the types and check for your conditions: var matchingTypes = from t in asm.GetTypes() where !t.IsInterface && !t.IsAbstract where typeof(ICustomInterface).IsAssignableFrom(t) let foo = t.GetCustomAttribute<FooAttribute>() where foo != null && foo.Bar == Y select t; I am assuming you want...

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c#,data-access-layer,bll

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c#,mysql

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c#,bouncycastle,portable-class-library

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c#,.net

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

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c#,xaml,styles,wpf-controls

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c#,wpf,xaml,canvas

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c#,.net,regex,string,replace

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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#,multithreading,file-search

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c#,xml,xpath,xmldocument,xmlnodelist

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c#,sql,sql-server,database

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c#,regex

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asp.net,ssl,https

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c#,xml,linq

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c#,.net,linq,grid,devexpress

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c#,linq

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c#,.net,types,casting

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c#,asp.net,nancy

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c#,xml

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c#,linq,list,updates

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

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c#,asp.net,active-directory

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

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

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asp.net,architecture,wcfserviceclient

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c#,pervasive

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

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c#,visual-studio,setup-project

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