Tell me creation ,deleted and updates of dropdownbyindex

Question

hi
my name is praveen
my question iam designing a form related to webdynpro
in that iam creating two dropdownbyindex in that
1.userid2.Material id
sub: i require code samples and binding
i have to select the items form those and
1button:insert
2button:Retrieve
3buttton:delete
4thbutton:update
i have to click those buttons so that i can display in smae page in same table those upadates.
please tell me my questin to answer very immediately
because we are facing about code samples

Answer 1

Hi Praveen,
Go to layout of the view Create dropdownbyindexUI element
Create a node_userid having the attribute user_id and bind that attribute to texts property of the dropdown
write this code in doinit to populate values to the node
If all user ids are in an vector userid_vec
for (int i =  0; i <userid_vec.size; ++i)
    IPrivateApplicationView.Inode_useridElement element = wdContext.createnode_useridElement();
    element.setAtt1(userid_vec.ElementAt(i));
    wdContext.nodenode_userid().addElement(element);
bind an action to property onSelect. you can access the index of the selected element in the event handler in implementation
wdContext.nodenode_userid().getLeadSelection();
Link the onAction property of button to an action
Create an element of the node to which you should add these values
IPrivate<view name>.I<node name>Element element = wdContext.create<node name>Element();
element.set<attribute name>(wdContext.nodenode_userid().getElementAt(wdContext.nodenode_userid().getElementAt(wdContext.nodenode_userid().getLeadSelection()).getAttributeValue(" user_id").toString());));
wdContext.node<node name>().addElement(element);
Like this for deleting you can loopthrough the node from which you have to delete and identify the element
int index = 0;
for(int i = 0;i<wdContext.node<node name>().size;i++)
wdContext.node<node name>().get<node name>Elementat(i).getAttributevalue("user_id").equals(<Selected element>)
index = i;
Once you get the element you can remove it from table
wdContext.node<node name>().removeElement(wdContext.node<node name>().get<node name>ElementAt(index)
For update you once you get the index you can go to the element and modify it
What do you mean by retreiving the element?
Hope this helps you
Regards
Rohit