Question

我将有一个带有一些节点的treenode。我的表单上会有一个datagridview。最初我会将一些数据加载到gridview中。现在，如果我在我的trreview中选择一个节点，我想将一个特定的行作为选定行。

假设我的树视图如下

根 | - ＆GT;儿童 | - ＆GT; Child1

如果我选择了child，我想在相应的行中选择相应的行，如果child1另一行应该被选中。

请知道

Answer 1

1）您需要将节点映射到相应的数据网格行

this.dataGridView1.Rows[0].Tag = id; // a node id

2）处理节点点击事件并按ID找到相应的行并选择它

if (tvwACH.SelectedNode.Parent != null)
{
        int id  = (int)tvwACH.SelectedNode.Tag ; // make sure you've already assigned tag when creating Three nodes and data rows
        foreach(DataGridViewRow  row in this.dataGridView1.Rows)
        {
           int rowId = (int)row.Tag ;
            if(rowId == id)
            {
              row.Selected = ture;
            }
            else
            {
              row.Selected = false; //discard other rows 
            }

         }
}

Answer 2

yourDataGridView.Rows(nRowIndex).Selected = true;

Answer 3

这是我写的代码

   private void tvwACH_AfterSelect(object sender, TreeViewEventArgs e)
    {

        string node = string.Empty;
        if (tvwACH.SelectedNode.Parent != null)
        {
             node = tvwACH.SelectedNode.Text.ToString();
            if (node == "FileHeader")
            {
                int tag = Convert.ToInt16(tvwACH.SelectedNode.Tag.ToString());
                this.dataGridView1.Rows[0].Tag = tag;
                foreach (DataGridViewRow row in dataGridView1.Rows)
                {
                    int rowId = (int)row.Tag;
                    if (rowId == tag)
                    {
                        row.Selected = true;
                    }
                }
            }

            string strSwitch = tvwACH.SelectedNode.Parent.Text;
            switch (strSwitch)
            {
                case "ACH":
                    {
                        dataGridView1.Visible = true;
                        dataGridView1.Rows.Clear();
                        node = tvwACH.SelectedNode.Text;
                        StreamReader sr = new StreamReader(node);
                        while (sr.Peek() >= 0)
                        {
                            string line = sr.ReadLine();
                            dataGridView1.Rows.Add(rectype[line.Substring(0, 1)].ToString(), line);
                        }
                        sr.Close();
                    }

                    break;

            }
        }
    }

Answer 4

试试这个：

public partial class Form1 : Form
{
    public Form1()
    {
        InitializeComponent();
    }
    int flage = 1;
    private void button1_Click(object sender, EventArgs e)
    {
        flage = 1;
        for (int i = 0; i < dataGridView1.Rows.Count; i++)
        {

            if (dataGridView1.Rows[i].Selected)
            {
                DataGridViewRow currentRow = dataGridView1.SelectedRows[0];


                TreeNode node1 = new TreeNode(currentRow.Cells[1].Value.ToString());
                TreeNode node2 = new TreeNode(currentRow.Cells[2].Value.ToString());
                TreeNode node3 = new TreeNode(currentRow.Cells[3].Value.ToString());
                TreeNode[] TreeArray = new TreeNode[] { node1,node2, node3 };
                TreeNode finalnode = new TreeNode(currentRow.Cells[0].Value.ToString(), TreeArray);

                treeView1.Nodes.Add(finalnode);
                flage = 1;
                break;
            }
            else
            {
                flage = 0;


            }
        }
       if(flage==0)
        {
            MessageBox.Show("Row is not Selected Please select the row");
        }
    }

    private void button2_Click(object sender, EventArgs e)
    {
        treeView1.Nodes.Remove( treeView1.SelectedNode);
    }

    int flage2;
    private void button3_Click(object sender, EventArgs e)
    {

        for (int i = 0; i < dataGridView1.Rows.Count; i++)
        {
            if (dataGridView1.Rows[i].Selected)
            {
                dataGridView1.Rows.Remove(dataGridView1.SelectedRows[0]);
                flage2 = 1;
                break;
            }

            else
            {
                flage2 = 0;
            }
        }
        if (flage2 == 0)
        {
            MessageBox.Show("Row is not selected Please select the row");
        }

    }
}

如何根据树视图选择在datagridview中选择特定行

4 个答案: