ASPxClientGridView.GetVisibleRowsOnPage Method
In This Article
Returns the number of rows actually displayed within the active page.
#Declaration
TypeScript
GetVisibleRowsOnPage(): number
#Returns
Type | Description |
---|---|
number | The number of rows displayed within the active page. |
#Remarks
Use the GetVisibleRowsOnPage method to get the number of rows that are currently visible on the page.
#Example
This example demonstrates how to use the GetSelectedKeysOnPage and GetVisibleRowsOnPage
methods to prevent a user from deleting all rows on a single grid page (if editing logic requires it).
To do this, you can compare the array length of keys obtained through the client GetSelectedKeysOnPage method (returns keys only on a visible page) and the number of rows on a page obtained through the clientGetVisibleRowsOnPage method.
function DeleteSelectedRows(s, e) {
var keys = GridView.GetSelectedKeysOnPage();
var rowsCount = GridView.GetVisibleRowsOnPage();
if (keys.length == rowsCount) {
alert('You cannot delete all rows on a page!');
GridView.UnselectRowsByKey(keys);
} else {
if (confirm('Are you sure you want to delete rows with keys: [' + keys.toString() + ']')) {
alert('Data editing is not allowed in this demo!');
keys.forEach(function (key, index) {
GridView.DeleteRowByKey(key);
});
}
}
};
See Also