Apex commandLink file download

So, are you trying to download an image hosted somewhere in the web or uploaded within Salesforce Either case, i don't see a necessity to use the contenttype attribute. With above code able to download file in png format but image not available in the downloaded file. Login with Salesforce. Ask Search: Reset Search.

Welcome to Support! Search for an answer or ask a question of the zone or Customer Support. Need help? Live Controller Pilot. Advanced Examples. Overriding Buttons, Links, and Tabs with Visualforce. Using Static Resources. Creating and Using Custom Components. Dynamic Visualforce Bindings. Dynamic Visualforce Components. Integrating Email with Visualforce. Visualforce Charting. Creating Maps with Visualforce. Render Flows with Visualforce. Templating with Visualforce.

Developing Salesforce Apps with Visualforce. Using JavaScript in Visualforce Pages. Best Practices. Standard Component Reference. When the command link is in focus, pressing the Enter key is equivalent to clicking the link. Use merge-field syntax to reference the method. If an action isn't specified, the page simply refreshes. Note that command links associated with the save, edit, or delete actions in a standard controller are rendered only if the user has the appropriate permissions.

Likewise, command links associated with the edit and delete actions are rendered only if a record is associated with the page. If not specified, this value defaults to "ISO". The number and order of comma-separated values depends on the shape being defined.

Coordinates can be expressed in pixels or percentages, and represent the distance from the top-left corner of the image that is mapped. See also the shape attribute. For more information on this attribute, see the W3C specifications. If set to true, the action happens immediately and validation rules are skipped. If not specified, this value defaults to false. The value of this attribute is a space-separated list of link types. If not specified, this value defaults to true.

This value can be a single ID, a comma-separated list of IDs, or a merge field expression for a list or collection of IDs. Valid values are default, circle, rect, and poly. See also the coords attribute. See the actionStatus component. This value must be an integer between 0 and , with component 0 being the first component that is selected when a user presses the Tab key. You can also specify your own target names by assigning a value to the name attribute of a desired destination.

For more information, including a complete list of possible values, see the W3C specifications. Note that you can also specify text or an image to display as the command link by embedding content in the body of the commandLink tag.

If both the value attribute and embedded content are included, they are displayed together. See Also apex:form. Cookie Consent Manager. General Information. Required Cookies.

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