how to restrict the size of upload in c#.net windows

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hi,

iam uploading images to the database as byte[].i need to restrict the size of upload say 5mb how it is possible in c# windows programically.

Regards,
sajith

Posted 27-Mar-12 18:16pm

sajithnet

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Ganesan Senthilvel · Answer 1 · 2012-03-27T18:49:00

Solution 1

You need to apply the setting in your web.config file. It affects the entire application, though... I don't think you can set it per page.

XML

<configuration>
  <system.web>
    <httpRuntime maxRequestLength="xxx" />
  </system.web>
</configuration>

xxx is KB. The default is 4096 (= 4 MB).

Posted 27-Mar-12 18:49pm

Ganesan Senthilvel

Comments

sajithnet 28-Mar-12 2:06am

thanks u ganesan,
i got the answer.

public bool Limit(string path) {
const int limit = 5;
float size = ToByteArray(path).Length / 1024f / 1024f;//first convertto kb then to mb
if (size > limit) {
SendMessage("Uploading Limit Exceeds");
return false;
}
return true;
}

public byte[] ToByteArray(string path) {
byte[] buffer = File.ReadAllBytes(path);
return buffer;
}

Sushil Mate · Answer 2 · 2012-03-27T19:11:00

Solution 2

Check image byte array length with 5242880

C#

if(ImageArray.Length > 5242880)
{
//Display error message.
}
else
{
//Upload image byte array.
}

Posted 27-Mar-12 19:11pm

Sushil Mate

Comments

sajithnet 28-Mar-12 2:06am

thank you,mate
i got the answer. public bool Limit(string path) { const int limit = 5; float size = ToByteArray(path).Length / 1024f / 1024f;//first convertto kb then to mb if (size > limit) { SendMessage("Uploading Limit Exceeds"); return false; } return true; } public byte[] ToByteArray(string path) { byte[] buffer = File.ReadAllBytes(path); return buffer; }

sajithnet · Answer 3 · 2012-03-27T20:07:00

public bool Limit(string path)
 { const int limit = 5;
 float size = ToByteArray(path).Length / 1024f / 1024f; 
if (size > limit)
 { SendMessage("Uploading Limit Exceeds");
 return false; } 
return true; }

public byte[] ToByteArray(string path)
 { byte[] buffer = File.ReadAllBytes(path); return buffer; }

C#