TreeView Control in C#

Arun Kurmi

13y2.5kVisual Basic .NET

hi friends,

(1) In below code how to add day node.

using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Linq;

using System.Text;

using System.Windows.Forms;

using System.Globalization;

namespace msg

{

public partial class TreeViewControl : Form

{

public TreeViewControl()

{

InitializeComponent();

}

private void TreeViewControl_Load(object sender, EventArgs e)

{

//System.Globalization.DateTimeFormatInfo d = new System.Globalization.DateTimeFormatInfo();

DateTimeFormatInfo d = new DateTimeFormatInfo();

for (int yearnum = 1989; yearnum <= 2013; yearnum++)

{

TreeNode yearnode = new TreeNode();

yearnode.Text = yearnum.ToString();

treeView1.Nodes.Add(yearnode);

for (int monthnum = 0; monthnum < 12; monthnum++)

{

TreeNode monthnode = new TreeNode();

//monthnode.Text = monthnum.ToString();

//monthnode.Text=DateTimeFormatInfo.CurrentInfo.MonthNames[monthnum].ToString();

monthnode.Text =d.MonthNames[monthnum].ToString();

yearnode.Nodes.Add(monthnode);

}

}

(2) where i found complete hierarchy of namespace their class and their methods and properties because sometimes i faced problem "You are missing directive or an assembly reference ".

2 Replies

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Blocked Account13y ago
Accepted answer
Solution for first
DateTimeFormatInfo d = new DateTimeFormatInfo();

int yearnum;

int monthnum;

for (yearnum = 1989; yearnum <= 2013; yearnum++)

{

     TreeNode yearnode = new TreeNode();

     yearnode.Text = yearnum.ToString();

     treeView1.Nodes.Add(yearnode);

     for (monthnum = 1; monthnum <= 12; monthnum++)

     {

         TreeNode monthnode = new TreeNode();

         monthnode.Text = d.MonthNames[monthnum-1].ToString();

         yearnode.Nodes.Add(monthnode);

         int s = DateTime.DaysInMonth(yearnum, monthnum);

         for (int daynum = 1; daynum <= s; daynum++)

         {

             TreeNode daynode = new TreeNode();

             daynode.Text = daynum.ToString();

             monthnode.Nodes.Add(daynode);

         }

     }

}
Arun Kurmi13y ago
hi,
thanks this is working.
why we take [monthnum-1] in below statement:
monthnode.Text = d.MonthNames[monthnum-1].ToString();

////////////////////////////////////////////////////
before your suggestion i tried something like given below.Whats mistake in below code:

for (int daynum = 0; daynum <= d.Calendar.GetDaysInMonth(yearnum, (monthnum + 1)); daynum++)
{
TreeNode daynode = new TreeNode();
daynode.Text = daynum.ToString();
System.DateTime dn = new DateTime(yearnum, monthnum + 1, daynum + 1, 0, 0, 0);
daynode.Text = dn.ToString("dd dddd");
monthnode.Nodes.Add(daynode);
}