Problem with Radio Button and Form Navigation

I have a set of radio buttons on a Windows Form. A click of a button is supposed to open a Windows Form. The appropriate form opens when the button is clicked. However, the first click of a button, each click opens the form it's supposed to open plus the previous form that was opened. For example, if I click the first button, Form A opens. I close Form A, and then I click the second button. The second button is only supposed to open Form B, but it opens Form B AND Form A when it is clicked. Here is the code:



using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;

namespace DBInfo
{
	/// 
	/// Summary description for Form1.
	/// 
	public class frmMain : System.Windows.Forms.Form
	{
    private System.Windows.Forms.Label lblTitle;
    private System.Windows.Forms.Label lblSubtitle;
    private System.Windows.Forms.Label lblButtons;
    private System.Windows.Forms.RadioButton radSrvNew;
    private System.Windows.Forms.RadioButton radSrvInfo;
    private System.Windows.Forms.RadioButton radDB;
    private System.Windows.Forms.RadioButton radJobHist;
    private System.Windows.Forms.RadioButton radUserInfo;
    private System.Windows.Forms.RadioButton radSrvUpdate;
    private System.Windows.Forms.RadioButton radDBUpdate;
    private System.Windows.Forms.RadioButton radAnalyze;
		/// 
		/// Required designer variable.
		/// 
		private System.ComponentModel.Container components = null;

		public frmMain()
		{
			//
			// Required for Windows Form Designer support
			//
			InitializeComponent();

			//
			// TODO: Add any constructor code after InitializeComponent call
			//
		}

		/// 
		/// Clean up any resources being used.
		/// 
		protected override void Dispose( bool disposing )
		{
			if( disposing )
			{
				if (components != null) 
				{
					components.Dispose();
				}
			}
			base.Dispose( disposing );
		}

		#region Windows Form Designer generated code
		/// 
		/// Required method for Designer support - do not modify
		/// the contents of this method with the code editor.
		/// 
		private void InitializeComponent()
		{
      this.lblTitle = new System.Windows.Forms.Label();
      this.lblSubtitle = new System.Windows.Forms.Label();
      this.radSrvNew = new System.Windows.Forms.RadioButton();
      this.radSrvInfo = new System.Windows.Forms.RadioButton();
      this.radDB = new System.Windows.Forms.RadioButton();
      this.radJobHist = new System.Windows.Forms.RadioButton();
      this.radUserInfo = new System.Windows.Forms.RadioButton();
      this.lblButtons = new System.Windows.Forms.Label();
      this.radSrvUpdate = new System.Windows.Forms.RadioButton();
      this.radDBUpdate = new System.Windows.Forms.RadioButton();
      this.radAnalyze = new System.Windows.Forms.RadioButton();
      this.SuspendLayout();
      // 
      // lblTitle
      // 
      this.lblTitle.Font = new System.Drawing.Font("Microsoft Sans Serif", 12F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
      this.lblTitle.Location = new System.Drawing.Point(16, 16);
      this.lblTitle.Name = "lblTitle";
      this.lblTitle.Size = new System.Drawing.Size(230, 24);
      this.lblTitle.TabIndex = 0;
      this.lblTitle.Text = "Technical-Database Services";
      // 
      // lblSubtitle
      // 
      this.lblSubtitle.Font = new System.Drawing.Font("Microsoft Sans Serif", 12F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
      this.lblSubtitle.Location = new System.Drawing.Point(16, 48);
      this.lblSubtitle.Name = "lblSubtitle";
      this.lblSubtitle.Size = new System.Drawing.Size(250, 24);
      this.lblSubtitle.TabIndex = 1;
      this.lblSubtitle.Text = "Database Information Repository";
      // 
      // radSrvNew
      // 
      this.radSrvNew.Font = new System.Drawing.Font("Microsoft Sans Serif", 10F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
      this.radSrvNew.Location = new System.Drawing.Point(16, 88);
      this.radSrvNew.Name = "radSrvNew";
      this.radSrvNew.Size = new System.Drawing.Size(270, 20);
      this.radSrvNew.TabIndex = 3;
      this.radSrvNew.Text = "Enter A New Server";
      this.radSrvNew.CheckedChanged += new System.EventHandler(this.radSrvNew_CheckedChanged);
      // 
      // radSrvInfo
      // 
      this.radSrvInfo.Location = new System.Drawing.Point(16, 160);
      this.radSrvInfo.Name = "radSrvInfo";
      this.radSrvInfo.Size = new System.Drawing.Size(270, 20);
      this.radSrvInfo.TabIndex = 4;
      this.radSrvInfo.Text = "View Server Information";
      this.radSrvInfo.CheckedChanged += new System.EventHandler(this.radSrvInfo_CheckedChanged);
      // 
      // radDB
      // 
      this.radDB.Location = new System.Drawing.Point(16, 184);
      this.radDB.Name = "radDB";
      this.radDB.Size = new System.Drawing.Size(270, 20);
      this.radDB.TabIndex = 5;
      this.radDB.Text = "View Database Information";
      this.radDB.CheckedChanged += new System.EventHandler(this.radDB_CheckedChanged);
      // 
      // radJobHist
      // 
      this.radJobHist.Location = new System.Drawing.Point(16, 208);
      this.radJobHist.Name = "radJobHist";
      this.radJobHist.Size = new System.Drawing.Size(270, 20);
      this.radJobHist.TabIndex = 6;
      this.radJobHist.Text = "View Job History Information";
      this.radJobHist.CheckedChanged += new System.EventHandler(this.radJobHist_CheckedChanged);
      // 
      // radUserInfo
      // 
      this.radUserInfo.Location = new System.Drawing.Point(16, 232);
      this.radUserInfo.Name = "radUserInfo";
      this.radUserInfo.Size = new System.Drawing.Size(270, 20);
      this.radUserInfo.TabIndex = 7;
      this.radUserInfo.Text = "View User and Login Information";
      this.radUserInfo.CheckedChanged += new System.EventHandler(this.radUserInfo_CheckedChanged);
      // 
      // lblButtons
      // 
      this.lblButtons.Location = new System.Drawing.Point(16, 72);
      this.lblButtons.Name = "lblButtons";
      this.lblButtons.Size = new System.Drawing.Size(270, 16);
      this.lblButtons.TabIndex = 8;
      this.lblButtons.Text = "Choose One Of The Following Options:";
      // 
      // radSrvUpdate
      // 
      this.radSrvUpdate.Font = new System.Drawing.Font("Microsoft Sans Serif", 10F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
      this.radSrvUpdate.Location = new System.Drawing.Point(16, 112);
      this.radSrvUpdate.Name = "radSrvUpdate";
      this.radSrvUpdate.Size = new System.Drawing.Size(270, 20);
      this.radSrvUpdate.TabIndex = 9;
      this.radSrvUpdate.Text = "Update Server Information";
      this.radSrvUpdate.CheckedChanged += new System.EventHandler(this.radSrvUpdate_CheckedChanged);
      // 
      // radDBUpdate
      // 
      this.radDBUpdate.Font = new System.Drawing.Font("Microsoft Sans Serif", 10F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
      this.radDBUpdate.Location = new System.Drawing.Point(16, 136);
      this.radDBUpdate.Name = "radDBUpdate";
      this.radDBUpdate.Size = new System.Drawing.Size(270, 20);
      this.radDBUpdate.TabIndex = 10;
      this.radDBUpdate.Text = "Update Database Information";
      this.radDBUpdate.CheckedChanged += new System.EventHandler(this.radDBUpdate_CheckedChanged);
      // 
      // radAnalyze
      // 
      this.radAnalyze.Location = new System.Drawing.Point(16, 256);
      this.radAnalyze.Name = "radAnalyze";
      this.radAnalyze.Size = new System.Drawing.Size(270, 20);
      this.radAnalyze.TabIndex = 11;
      this.radAnalyze.Text = "Analyze A SQL Server Instance";
      this.radAnalyze.CheckedChanged += new System.EventHandler(this.radAnalyze_CheckedChanged);
      // 
      // frmMain
      // 
      this.AutoScaleBaseSize = new System.Drawing.Size(6, 16);
      this.ClientSize = new System.Drawing.Size(792, 566);
      this.Controls.Add(this.lblSubtitle);
      this.Controls.Add(this.lblTitle);
      this.Controls.Add(this.lblButtons);
      this.Controls.Add(this.radSrvNew);
      this.Controls.Add(this.radSrvUpdate);
      this.Controls.Add(this.radDBUpdate);
      this.Controls.Add(this.radSrvInfo);
      this.Controls.Add(this.radDB);
      this.Controls.Add(this.radJobHist);
      this.Controls.Add(this.radUserInfo);
      this.Controls.Add(this.radAnalyze);
      this.Font = new System.Drawing.Font("Microsoft Sans Serif", 10F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
      this.Name = "frmMain";
      this.Text = "Welcome to the Database Information System";
      this.ResumeLayout(false);

    }
		#endregion

		/// 
		/// The main entry point for the application.
		/// 
		[STAThread]
		static void Main() 
		{
			Application.Run(new frmMain());
		}

    private void radSrvNew_CheckedChanged(object sender, System.EventArgs e)
    {
      Form frm = new frmEnterServer();
      frm.Show();
    }

    private void radSrvUpdate_CheckedChanged(object sender, System.EventArgs e)
    {
      Form frm = new frmUpdateServer();
      frm.Show();
    }

    private void radDBUpdate_CheckedChanged(object sender, System.EventArgs e)
    {
      Form frm = new frmUpdateDatabase();
      frm.Show();
    }

    private void radSrvInfo_CheckedChanged(object sender, System.EventArgs e)
    {
      Form frm = new frmViewServerInfo();
      frm.Show();
    }

    private void radDB_CheckedChanged(object sender, System.EventArgs e)
    {
      Form frm = new frmViewDatabaseInfo();
      frm.Show();
    }

    private void radJobHist_CheckedChanged(object sender, System.EventArgs e)
    {
      Form frm = new frmViewJobInfo();
      frm.Show();
    }

    private void radUserInfo_CheckedChanged(object sender, System.EventArgs e)
    {
      Form frm = new frmViewUserInfo();
      frm.Show();
    }

    private void radAnalyze_CheckedChanged(object sender, System.EventArgs e)
    {
      Form frm = new frmAnalyzeServer();
      frm.Show();
    }

	}
}

How do I prevent this from happening?

2 Replies

Know the answer? Post it — somebody with the same question will find it here.

Wyatt7021y ago
I tried it out and it's working. Thanks for the tip.
shabonaa21y ago
that is happen because when u click radio2 its state changed and also radio1 stats is changed too. so u need to put a condition on the satae also for ex: private void radDBUpdate_CheckedChanged(object sender, System.EventArgs e) { if (radDBupdate.Checked == true) { Form frm = new frmUpdateDatabase(); frm.Show(); } } and that is for all radio button u use