TreeView CheckBoxes Problem

Question

0.00/5 (No votes)

See more:

Hi everyone...

I have populated a treeview. There are child nodes and those also have the child nodes and so on. Now at the time of edit, I am getting the datatable containing the treeview node values. and on the basis of that I need to make "checked" the check boxes at the time of page load. I am getting the Parent nodes only by using the following code below. But unable to get the child nodes.

DataTable dt = ds1.Tables[0];
foreach (TreeNode node in TreeViewArticleCatagory.Nodes)
{
    foreach (DataRow dr in dt.Rows)
    {
        if (Convert.ToString(dr["Item"]) == node.Value)
        {
            node.Checked = true;
            //TreeViewArticleCatagory.SelectedNode.Checked = true;
        }
    }
}

Please help me....

Thanks in advance.....

[edit]Code block inserted to preserve formatting - OriginalGriff[/edit]

Posted 24-Aug-10 22:39pm

arindamrudra

Updated 24-Aug-10 22:42pm

OriginalGriff

v2

Add a Solution

Comments

OriginalGriff 25-Aug-10 5:07am

"It is not working...
I tried.."
What did you try? Edit your original question to show what you tried that uses node.Nodes, and add another comment to my answer to let me know. Do not create a new answer - I don't get told about them, so may not respond at all quickly!

arindamrudra 25-Aug-10 6:40am

yes finally I got it...

arindamrudra 25-Aug-10 6:44am

I used the recursive function for that....

ds1 = new DataSet();
ds1 = oCategory.GetCategoriesOfArticle(ArticleID);
if (ds1 !=null && ds1.Tables[0].Rows.Count > 0)
{
foreach (TreeNode node in TreeViewArticleCatagory.Nodes)
{
CheckNodes(node);
}

//foreach (TreeNode node in TreeViewArticleCatagory.Nodes)
//{
// foreach (DataRow dr in dt.Rows)
// {
// if (Convert.ToString(dr["Item"]) == node.Value)
// {
// node.Checked = true;
// //TreeViewArticleCatagory.SelectedNode.Checked = true;
// }
// }
//}
}
}
private void CheckNodes(TreeNode _node)
{
if (_node.ChildNodes.Count > 0)
{
CheckIfNodeValueExistsInDataTable(_node, ds1);

foreach (TreeNode _childNode in _node.ChildNodes)
{
CheckNodes(_childNode);
}
}
else
{
CheckIfNodeValueExistsInDataTable(_node, ds1);
}
}
private void CheckIfNodeValueExistsInDataTable(TreeNode _node, DataSet _dsCatogories)
{
DataTable dtNodes = _dsCatogories.Tables[0];
DataRow[] drow= dtNodes.Select("Item='" + _node.Value+"'");
if (drow != null && drow.Length > 0)
{
_node.Checked = true;
}
}
Thank you very much for your help...
Your hints help a lot..
Thanks once again..

1 solution

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

OriginalGriff · Accepted Answer · 2010-08-24T22:41:00

Solution 1

Try looking at node.Nodes - it is a list of child nodes for this node.

Posted 24-Aug-10 22:41pm

OriginalGriff

Comments

arindamrudra 25-Aug-10 5:01am

It is not working...
I tried..

arindamrudra 25-Aug-10 6:45am

Reason for my vote of 3
The hints helped a lot