How to make the particular row get selected in datagridview based on treeview selection

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I will have a treenode with some nodes. I will have a datagridview on my form. Initially i will load some data in to the gridview. Now if i select a node at my trreview i would like to make a particular row as selected one.

Suppose my treeview is as follows

Root |-> Child |->Child1

If i select child i would like to make a corresponding row as selected if child1 another row should get selected.

I write my code as follows

C#

if (tvwACH.SelectedNode.Parent != null)
       {
           string str = tvwACH.SelectedNode.Index.ToString();
           if (str == "0")
           {
               Int16 tag = Convert.ToInt16(str);
               this.dataGridView1.Rows[tag].Selected = true;
           }

But the index for every node is getting 0. so any help please

Posted 8-Sep-10 22:41pm

demouser743

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Samuel Cherinet · Answer 1 · 2010-09-09T08:30:00

first of all how do you maintain the relationship between a node and the datagridview row? is there like a bound object or ??

to take advantage of your code, what I would do is: when populating my treeview I would keep track of the corresponding index using the "Tag" property of the treenode like

//in your load function
TreeNode node=tvwACH.Nodes.Add("node text");
node.Tag=row_index;

then by modifying your current code it would be.

C#

if (tvwACH.SelectedNode.tag != Null)
{
    Int16 tag = Convert.ToInt16(tvwACH.SelectedNode.tag);
    this.dataGridView1.Rows[tag].Selected = true;
}

hope this helps.if you could post how you populate the treeview and the gridview, it might be easier to clarify this.

Ruselo Riva Asentista · Answer 2 · 2010-09-12T05:40:00

Instead of tagging the row's index, why don't you tag the row itself.

for(int i=0; i<treeview1.nodes.count;>{
    TreeNode node = treeView1.Nodes[i];
    DataGridViewRow row = dataGridView1.Rows[i];
    node.Tag = row;
}

This assumes that both have the same number of nodes / rows
Next, handle the AfterSelect of the TreeView

private void treeView1_AfterSelect(object sender, TreeViewEventArgs e)
{
    // Retrieve data from the current TreeNode
    TreeNode node = e.Node;
    DataGridViewRow row = (DataGridViewRow)node.Tag;
    row.Selected = true;
}

This should work better than keeping the index. I hope this helps

How to make the particular row get selected in datagridview based on treeview selection

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