Want to win a PS4? Go Premium and enter to win our High-Tech Treats giveaway. Enter to Win

x
?
Solved

How to AllowColumnReorder programmatically on listview - C# .Net 1.1

Posted on 2008-06-16
1
Medium Priority
?
1,163 Views
Last Modified: 2013-12-17
How to AllowColumnReorder programmatically in C# .Net 1.1???
Here is a working sample in VB.net:
http://bytes.com/forum/thread223912.html

My conversion does not work in C#, it causes a nullreference exception...
What's wrong???
using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.Runtime.InteropServices;
using System.Diagnostics;
 
namespace WindowsApplication5
{
	/// <summary>
	/// Summary description for Form1.
	/// </summary>
	public class Form1 : System.Windows.Forms.Form
	{
 
		static int LVM_SETCOLUMNORDERARRAY = 0x103A;  //LVM_FIRST + 58;
		static int LVM_GETCOLUMNORDERARRAY = 0x103B;  //LVM_FIRST + 59;
//		[DllImport("user32.dll", EntryPoint="SendMessageA")]
//		static extern int ListViewColumnOrder(Int32 hwnd , Int32 Msg , Int32 wParam , Int32 lParam );
		[DllImport("user32.dll")]
		public static extern bool ListViewColumnOrder(IntPtr hWnd, Int32 msg, Int32 wParam, IntPtr lParam);
		
 
//		[DllImport("user32.dll")]
//		static extern bool SendMessage(IntPtr hWnd, Int32 msg, Int32 wParam,ref LVCOLUMN lParam);
 
		bool FirstTime = true;
 
		private System.Windows.Forms.Button button1;
		private System.Windows.Forms.ListView listView1;
		private System.Windows.Forms.ColumnHeader columnHeader1;
		private System.Windows.Forms.ColumnHeader columnHeader2;
		private System.Windows.Forms.ColumnHeader columnHeader3;
		/// <summary>
		/// Required designer variable.
		/// </summary>
		private System.ComponentModel.Container components = null;
 
		public Form1()
		{
			//
			// Required for Windows Form Designer support
			//
			InitializeComponent();
 
			//
			// TODO: Add any constructor code after InitializeComponent call
			//
		}
 
		/// <summary>
		/// Clean up any resources being used.
		/// </summary>
		protected override void Dispose( bool disposing )
		{
			if( disposing )
			{
				if (components != null) 
				{
					components.Dispose();
				}
			}
			base.Dispose( disposing );
		}
 
		#region Windows Form Designer generated code
		/// <summary>
		/// Required method for Designer support - do not modify
		/// the contents of this method with the code editor.
		/// </summary>
		private void InitializeComponent()
		{
			System.Windows.Forms.ListViewItem listViewItem1 = new System.Windows.Forms.ListViewItem("fsdfdas");
			System.Windows.Forms.ListViewItem listViewItem2 = new System.Windows.Forms.ListViewItem("fsdfdsa");
			System.Windows.Forms.ListViewItem listViewItem3 = new System.Windows.Forms.ListViewItem("erterwtwer");
			this.button1 = new System.Windows.Forms.Button();
			this.listView1 = new System.Windows.Forms.ListView();
			this.columnHeader1 = new System.Windows.Forms.ColumnHeader();
			this.columnHeader2 = new System.Windows.Forms.ColumnHeader();
			this.columnHeader3 = new System.Windows.Forms.ColumnHeader();
			this.SuspendLayout();
			// 
			// button1
			// 
			this.button1.Location = new System.Drawing.Point(72, 248);
			this.button1.Name = "button1";
			this.button1.Size = new System.Drawing.Size(120, 16);
			this.button1.TabIndex = 0;
			this.button1.Text = "button1";
			this.button1.Click += new System.EventHandler(this.button1_Click);
			// 
			// listView1
			// 
			this.listView1.AllowColumnReorder = true;
			this.listView1.Columns.AddRange(new System.Windows.Forms.ColumnHeader[] {
																						this.columnHeader1,
																						this.columnHeader2,
																						this.columnHeader3});
			this.listView1.GridLines = true;
			this.listView1.Items.AddRange(new System.Windows.Forms.ListViewItem[] {
																					  listViewItem1,
																					  listViewItem2,
																					  listViewItem3});
			this.listView1.Location = new System.Drawing.Point(0, 8);
			this.listView1.MultiSelect = false;
			this.listView1.Name = "listView1";
			this.listView1.Size = new System.Drawing.Size(288, 240);
			this.listView1.TabIndex = 1;
			this.listView1.View = System.Windows.Forms.View.Details;
			// 
			// columnHeader2
			// 
			this.columnHeader2.Text = "ColumnHeader2";
			// 
			// columnHeader3
			// 
			this.columnHeader3.Text = "ColumnHeader3";
			// 
			// Form1
			// 
			this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
			this.ClientSize = new System.Drawing.Size(292, 273);
			this.Controls.Add(this.listView1);
			this.Controls.Add(this.button1);
			this.Name = "Form1";
			this.Text = "Form1";
			this.ResumeLayout(false);
 
		}
		#endregion
 
		/// <summary>
		/// The main entry point for the application.
		/// </summary>
		[STAThread]
		static void Main() 
		{
			Application.Run(new Form1());
		}
 
		int c=0;
		Int32 [] sortorder;
		private void button1_Click(object sender, System.EventArgs e)
		{
		
			//sortorder=new int(ListView1.Columns.Count - 1);
 
			if(FirstTime){
				c = 2;
				FirstTime = false;
				sortorder=new Int32[3]; 
			}
			if( c > 2 )c = 0;
			sortorder[0] = c;
			c += 1;
			if( c > 2) c = 0;
			sortorder[1] = c;
			c += 1;
			if( c > 2 )c = 0;
			sortorder[2] = c;
 
			SetColumnOrder(listView1, sortorder);
		
		}
 
		public void SetColumnOrder(ListView ListViewToReorder , int[] SortOrder )
		{
			if( SortOrder.Length < 1 )return;
			if( SortOrder.Length > ListViewToReorder.Columns.Count) return;
			Int32 liSetColumnOrderArray = LVM_SETCOLUMNORDERARRAY;
			Int32 handle=listView1.Handle.ToInt32();
			Int32 slen=SortOrder.Length;
			this.Handle 
			int liSuccess = ListViewColumnOrder(handle, liSetColumnOrderArray, slen, SortOrder[0]);
			if( liSuccess!=0) 
			{
				listView1.Refresh();
			}
		}
 
}
}

Open in new window

0
Comment
Question by:cosie
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
1 Comment
 

Accepted Solution

by:
cosie earned 0 total points
ID: 21811379
0

Featured Post

Important Lessons on Recovering from Petya

In their most recent webinar, Skyport Systems explores ways to isolate and protect critical databases to keep the core of your company safe from harm.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

If you’re thinking to yourself “That description sounds a lot like two people doing the work that one could accomplish,” you’re not alone.
This article shows how to deploy dynamic backgrounds to computers depending on the aspect ratio of display
In this fourth video of the Xpdf series, we discuss and demonstrate the PDFinfo utility, which retrieves the contents of a PDF's Info Dictionary, as well as some other information, including the page count. We show how to isolate the page count in a…
Six Sigma Control Plans
Suggested Courses

604 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question