Passing parameters to the dialog sharepoint 2010 Client Object model

The most asked questions in our Forum below is about how to get the selected items from a list using and how to pass them or any other parameter as a querystring to the dialog page.

forum posts :

Get selected items in a list sharepoint 2010

sharepoint 2010 dialogue pass querystring

To answer both the questions our guest user sharepointgeek has posted a fairly simple example. The example below will get the selected items from your current list and add it to the myitems string seprated by “|”. Then we create an option variable and construct the url passing the selected items and listname as parameters.

var ctx = SP.ClientContext.get_current();
var items = SP.ListOperation.Selection.getSelectedItems(ctx);
var myItems = ”;
var k;

for (k in items)
{
myItems += ‘|’ + items[k].id;
}

var options = {
url: ‘/_layouts/Customdialog/mydialog.aspx?items=’ + myItems + ‘&source=’ + SP.ListOperation.Selection.getSelectedList(),

tite: ‘Move Documents’,
allowMaximize: false,
showClose: false,
width: 800,
height: 600,
dialogReturnValueCallback: demoCallback };

SP.UI.ModalDialog.showModalDialog(options);”