Selected.Index problem

Question

Program is a test to see is it working, I just want to use 2 comboboxes to return me Selected.Index, so I can point to a location in my table (matrix) which has probability values (double).When I run it, I get "female"=-1 and warning that of course i can't access table's location with -1 index, as comboBox2.SelectedIndex always returns me -1,I don't know why is this happening. comboxBox1.SelectedIndex returns ok value.  this my "main" code (Form1.cs).  I created custom event handler "chance" and add it to comboBox1 and comboBox2 SelectedIndexChange event

 

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;

namespace test

{

public partial class 
Form1 : Form

{

private double[,] table 
={

{.5,.8,.6,.4,.2,.3},

{.8,.5,.4,.2,.6,.8}};

double outcome;

public Form1()

{

InitializeComponent();

comboBox1.SelectedIndex = 0; //male

comboBox2.SelectedIndex = 0; //female

}

public void chance(object sender, EventArgs e)

{

int male, female;

male = comboBox1.SelectedIndex;

female = comboBox2.SelectedIndex;

outcome = table[male, female];

label1.Text = outcome.ToString();

}



}

}

And designer's code:

 

namespace test

{

partial class Form1

{

/// 
<summary>

/// 
Required designer variable.

/// 
</summary>

private System.ComponentModel.IContainer components = null;

/// 
<summary>

/// 
Clean up any resources being used.

/// 
</summary>

/// 
<param 
name="disposing">true if managed resources should be disposed; otherwise, 
false.</param>

protected override 
void Dispose(bool disposing)

{

if (disposing && (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()

{

this.comboBox1 = new 
System.Windows.Forms.ComboBox();

this.comboBox2 = new 
System.Windows.Forms.ComboBox();

this.label1 = new 
System.Windows.Forms.Label();

this.SuspendLayout();

// 


// 
comboBox1

// 


this.comboBox1.FormattingEnabled = 
true;

this.comboBox1.Items.AddRange(new 
object[] {

"Billy",

"Andy"});

this.comboBox1.Location = new 
System.Drawing.Point(52, 42);

this.comboBox1.Name = "comboBox1";

this.comboBox1.Size = new 
System.Drawing.Size(121, 21);

this.comboBox1.TabIndex = 0;

this.comboBox1.SelectedIndexChanged += 
new System.EventHandler(this.chance);

// 


// 
comboBox2

// 


this.comboBox2.FormattingEnabled = 
true;

this.comboBox2.Items.AddRange(new 
object[] {

"Mary",

"Suzy",

"Ann",

"Gerthruda",

"Rose",

"Angela"});

this.comboBox2.Location = new 
System.Drawing.Point(280, 42);

this.comboBox2.Name = "comboBox2";

this.comboBox2.Size = new 
System.Drawing.Size(119, 21);

this.comboBox2.TabIndex = 1;

this.comboBox2.SelectedIndexChanged += 
new System.EventHandler(this.chance);

// 


// 
label1

// 


this.label1.AutoSize = true;

this.label1.Location = new 
System.Drawing.Point(214, 139);

this.label1.Name = "label1";

this.label1.Size = new 
System.Drawing.Size(35, 13);

this.label1.TabIndex = 2;

this.label1.Text = "label1";

// 


// 
Form1

// 


this.AutoScaleDimensions = new 
System.Drawing.SizeF(6F, 13F);

this.AutoScaleMode = 
System.Windows.Forms.AutoScaleMode.Font;

this.ClientSize = new 
System.Drawing.Size(480, 383);

this.Controls.Add(this.label1);

this.Controls.Add(this.comboBox2);

this.Controls.Add(this.comboBox1);

this.Name = "Form1";

this.Text = "Form1";

this.ResumeLayout(false);

this.PerformLayout();

}

#endregion

private System.Windows.Forms.ComboBox comboBox1;

private System.Windows.Forms.ComboBox comboBox2;

private System.Windows.Forms.Label 
label1;

}

}