How to Increase the Max Upload File Size in ASP.NET?

Boosting ASP.NET's Maximum File Upload Size

ASP.NET applications have a default maximum file upload size of 4MB. This limitation can be problematic when handling larger files. This guide demonstrates how to increase this limit.

Modifying web.config

The solution involves adjusting the web.config file within your ASP.NET project. Locate the <system.web> section and, within it, the <httpRuntime> tag. The maxRequestLength attribute within <httpRuntime> defines the maximum HTTP request size in kilobytes (KB).

To raise the upload limit, modify the maxRequestLength value. Replace "xxx" with your desired limit in KB. For instance:

<code class="language-xml"><configuration>
  <system.web>
    <httpRuntime maxRequestLength="10240" />
  </system.web>
</configuration></code>

This example sets the maximum upload size to 10MB (10240 KB). It's crucial to understand that this setting applies to the entire application and isn't configurable on a per-page level.

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