How to show only user assigned contents in his dashboard?
In your view simply follow these steps:

Click the Advance Tab under the RELATIONSHIPS add a new relationship  Content:Author


Keep the Identifier as it is, but remember to check the Require this relationship option.


Now, under FILTER CRITERIA add a new filter User: Current and check the Is the logged in user as Yes



The exported code:
$view = new view();
$view-&gt;name = 'article';
$view-&gt;description = '';
$view-&gt;tag = 'default';
$view-&gt;base_table = 'node';
$view-&gt;human_name = 'Article';
$view-&gt;core = 7;
$view-&gt;api_version = '3.0';
$view-&gt;disabled = FALSE; /* Edit this to true to make a default view disabled initially */

/* Display: Master */
$handler = $view-&gt;new_display('default', 'Master', 'default');
$handler-&gt;display-&gt;display_options['title'] = 'Article';
$handler-&gt;display-&gt;display_options['use_more_always'] = FALSE;
$handler-&gt;display-&gt;display_options['access']['type'] = 'perm';
$handler-&gt;display-&gt;display_options['cache']['type'] = 'none';
$handler-&gt;display-&gt;display_options['query']['type'] = 'views_query';
$handler-&gt;display-&gt;display_options['exposed_form']['type'] = 'basic';
$handler-&gt;display-&gt;display_options['pager']['type'] = 'full';
$handler-&gt;display-&gt;display_options['pager']['options']['items_per_page'] = '10';
$handler-&gt;display-&gt;display_options['style_plugin'] = 'default';
$handler-&gt;display-&gt;display_options['row_plugin'] = 'fields';
/* Relationship: Content: Author */
$handler-&gt;display-&gt;display_options['relationships']['uid']['id'] = 'uid';
$handler-&gt;display-&gt;display_options['relationships']['uid']['table'] = 'node';
$handler-&gt;display-&gt;display_options['relationships']['uid']['field'] = 'uid';
$handler-&gt;display-&gt;display_options['relationships']['uid']['required'] = TRUE;
/* Field: Content: Title */
$handler-&gt;display-&gt;display_options['fields']['title']['id'] = 'title';
$handler-&gt;display-&gt;display_options['fields']['title']['table'] = 'node';
$handler-&gt;display-&gt;display_options['fields']['title']['field'] = 'title';
$handler-&gt;display-&gt;display_options['fields']['title']['label'] = '';
$handler-&gt;display-&gt;display_options['fields']['title']['alter']['word_boundary'] = FALSE;
$handler-&gt;display-&gt;display_options['fields']['title']['alter']['ellipsis'] = FALSE;
/* Sort criterion: Content: Post date */
$handler-&gt;display-&gt;display_options['sorts']['created']['id'] = 'created';
$handler-&gt;display-&gt;display_options['sorts']['created']['table'] = 'node';
$handler-&gt;display-&gt;display_options['sorts']['created']['field'] = 'created';
$handler-&gt;display-&gt;display_options['sorts']['created']['order'] = 'DESC';
/* Filter criterion: Content: Published */
$handler-&gt;display-&gt;display_options['filters']['status']['id'] = 'status';
$handler-&gt;display-&gt;display_options['filters']['status']['table'] = 'node';
$handler-&gt;display-&gt;display_options['filters']['status']['field'] = 'status';
$handler-&gt;display-&gt;display_options['filters']['status']['value'] = 1;
$handler-&gt;display-&gt;display_options['filters']['status']['group'] = 1;
$handler-&gt;display-&gt;display_options['filters']['status']['expose']['operator'] = FALSE;
/* Filter criterion: Content: Type */
$handler-&gt;display-&gt;display_options['filters']['type']['id'] = 'type';
$handler-&gt;display-&gt;display_options['filters']['type']['table'] = 'node';
$handler-&gt;display-&gt;display_options['filters']['type']['field'] = 'type';
$handler-&gt;display-&gt;display_options['filters']['type']['value'] = array(
  'article' =&gt; 'article',
);
/* Filter criterion: User: Current */
$handler-&gt;display-&gt;display_options['filters']['uid_current']['id'] = 'uid_current';
$handler-&gt;display-&gt;display_options['filters']['uid_current']['table'] = 'users';
$handler-&gt;display-&gt;display_options['filters']['uid_current']['field'] = 'uid_current';
$handler-&gt;display-&gt;display_options['filters']['uid_current']['relationship'] = 'uid';
$handler-&gt;display-&gt;display_options['filters']['uid_current']['value'] = '1';
$handler-&gt;display-&gt;display_options['filters']['uid_current']['expose']['operator_id'] = '';
$handler-&gt;display-&gt;display_options['filters']['uid_current']['expose']['label'] = 'Is the logged in user';
$handler-&gt;display-&gt;display_options['filters']['uid_current']['expose']['operator'] = 'uid_current_op';
$handler-&gt;display-&gt;display_options['filters']['uid_current']['expose']['identifier'] = 'uid_current';
$handler-&gt;display-&gt;display_options['filters']['uid_current']['expose']['required'] = TRUE;

/* Display: Page */
$handler = $view-&gt;new_display('page', 'Page', 'page');
$handler-&gt;display-&gt;display_options['path'] = 'article';

Cheers!