如何绑定我尝试过但没有得到任何人的Treeview告诉我我该怎么做 [英] how to bind treeview i tryed but not getting any one tell me how can i do this

问题描述

如何绑定我尝试过但没有得到任何人的Treeview告诉我我该怎么做

这是我的代码...

how to bind treeview i tryed but not getting any one tell me how can i do this

this is my code...

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data.SqlClient;
using System.Data;

public partial class treeview : System.Web.UI.Page
{
    SqlConnection con = new SqlConnection("..................;Initial Catalog=EmployeeDB;Integrated Security=True");

    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            BindDataInTreeView();
        }
    }

    private void BindDataInTreeView()
    {
        con.Open();
        string qry = "select StudentName from Student1";
        SqlDataAdapter da = new SqlDataAdapter(qry, con);
        DataSet ds = new DataSet();
        DataTable dt = new DataTable();
        da.Fill(dt);
        con.Close();
    }
    
    protected void btnsave_Click(object sender, EventArgs e)
    {
        con.Open();
        string qry = "insert into Student1 values('" + TextBox1.Text + "','" + TextBox2.Text + "','" + TextBox3.Text + "')";
           SqlCommand cmd = new SqlCommand(qry,con);
            cmd.ExecuteNonQuery();
            con.Close();
            BindDataInTreeView();
        }
    }

[edit]添加了代码块-OriginalGriff [/edit]

[edit]Code block added - OriginalGriff[/edit]

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