Get the corresponding dataobject (typed toward the correct Data Model) of the currently checked item in TreeView ?

3 Replies
2 Participants
Marked answer

Created by
YO Yordan

Platform
Blazor

Platform
Blazor

Control
TreeView

Created On
Jun 17, 2020 05:53 PM UTC

Last Activity On
Jun 19, 2020 06:54 AM UTC

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I have the follow :

<TreeViewFieldsSettings DataSource="@DataProviders.treeData"

Id="id"

ParentID="groupID"

Text="Caption"

Expanded="expanded"

HasChildren="hasChild"

IsChecked="selected">

public async Task onCheckNode( NodeCheckEventArgs o )

{

Console.WriteLine( o.Data.ToArray().ToString() );

}

- How to get the currently checked element from DataProviders.treeData provider in the onCheckNode event ?

3 Replies 1 reply marked as answer

SP Sowmiya Padmanaban Syncfusion Team June 18, 2020 11:04 AM UTC

Hi Yordon,

We have checked your reported query with TreeView component. We would like to let you know that nodeChecked and nodeChecking events return only the default mapping field of the checked node. In TreeView component, by using its getTreeData method, you can fetch the value defined in the data source of TreeView component to achieve your expected requirement.

If you pass particular node id as argument for getTreeData method, then it will return the corresponding node data. Or else, the method return the entire datasource of TreeView component.

Refer the below code snippet.

public async Task nodechecking(NodeCheckEventArgs args)

{

// Particular node id

var data= args.Data[0].Id;

// To fetch the corresponding node from TreeView Datasource

var node_data = await this.tree.GetTreeData(args.Data[0].Id);

}

Refer the below screenshot.