how to convert hex value to decimal using c#

Question

hi,
here i am write the code for decimal value to hex value.Now my requirement is how to convert hex value to decimal value using windows application code in c#.Please find this code as given below.
thank u

Manish Kumar Choudhary · Answer

Hi Naidu AMMAN p lz accept the ans incase it helps u. Thanks

Naidu AMMAN · Answer

thank you very much sir.

Manish Kumar Choudhary · Answer

Use it in button click. it will work string hexValue = textBox1.Text;//.ToString("X"); string[] ids = textBox1.Text.Split(' '); for (int i = 0; i { int decValue = int.Parse(ids[i], System.Globalization.NumberStyles.HexNumber); richTextBox1.AppendText(decValue.ToString()+"
"); }

Naidu AMMAN · Answer

sir i tried it is not working sir. how to convert each of them separately sir.

Manish Kumar Choudhary · Answer

It's possible but you have to extract particular string from that textbox. Means to say u have to take every value of string inside textbox when space came and convert each of them separately convert. accept the ans if it help u

Naidu AMMAN · Answer

thank u very much sir, sir we can given "7e" it show the 126. when i am giving the "7e a0 2b 41" its getting error in int decValue = int.Parse(hexValue, System.Globalization.NumberStyles.HexNumber); An unhandled exception of type 'System.FormatException' occurred in mscorlib.dll. sir it possible to show this data like this " 7e a0 2b 41 "

Manish Kumar Choudhary · Answer

Hi Naidu AMMAN , find the attachment and check it may help u

Naidu AMMAN · Answer

no sir

Naidu AMMAN · Answer

using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; using System.Threading.Tasks; using System.Windows.Forms; using System.IO; namespace Data1 { public partial class Form1 : Form { public Form1() { InitializeComponent(); } private void button_Load_Click(object sender, EventArgs e) { Stream mystream; OpenFileDialog openfileDailog1 = new OpenFileDialog(); if (openfileDailog1.ShowDialog() == System.Windows.Forms.DialogResult.OK) { if ((mystream = openfileDailog1.OpenFile()) != null) { string strfilename = openfileDailog1.FileName; string filetext = File.ReadAllText(strfilename); //MessageBox.Show(strfilename ); richTextBox1.Text = filetext; } } } private void button_Search_Click(object sender, EventArgs e) { int index = 0; string temp = richTextBox1.Text; richTextBox1.Text = ""; richTextBox1.Text = temp; while (index { richTextBox1.Find(textconvert.Text, index, richTextBox1.TextLength, RichTextBoxFinds.None); richTextBox1.SelectionBackColor = Color.Red; index = richTextBox1.Text.IndexOf(textconvert.Text, index) + 1; } } private int _myProperty; public int MyProperty { get { return _myProperty; } set { MyProperty = value; } // Oops, this will cause Stack overflow...should've been '_myProperty = value' } // int decValue = int.Parse(hexValue, System.Globalization.NumberStyles.HexNumber); //or //int decValue = Convert.ToInt32(hexValue, 16); private void button2_Click(object sender, EventArgs e) { long decnum = 0; int[] hexnum = new int[20]; int i = 0, r; // decnum = long.Parse(textconvert.Text); int decValue = int.Parse(textconvert.Text, System.Globalization.NumberStyles.HexNumber); while (decnum != 0) { r = (int)decnum % 16; if (r { r = r + 48; } else { r = r + 55; } hexnum[i++] = r; decnum = decnum / 16; } for (int j = i - 1; j >= 0; j--) { richTextBox2.Text += (char)hexnum[j]; //string hexValue = decValue.ToString("X"); //int decValue = int.Parse(hexValue, System.Globalization.NumberStyles.HexNumber); or //int decValue = Convert.ToInt32(hexValue, 16); } } } } sir i want out in the button click event only.Because here i am want give the only hex values in textbox( textconvert ) and after when i click on button2_Click event this output shows in decimal values in richTextBox2 . plz try it sir

Manish Kumar Choudhary · Answer

Hi Naidu AMMAN , it it work for u ?

Manish Kumar Choudhary · Answer

Use like this string hexValue = decValue . ToString ( "X" ); int decValue = int . Parse ( hexValue , System . Globalization . NumberStyles . HexNumber ); or int decValue = Convert . ToInt32 ( hexValue , 16 );

Naidu AMMAN · Answer

sir where u convert this in my code

Manish Kumar Choudhary · Answer

Hi Naidu AMMAN , To convert from Hex to Decimal do either... string hexValue = decValue . ToString ( "X" ); int decValue = int . Parse ( hexValue , System . Globalization . NumberStyles . HexNumber ); or int decValue = Convert . ToInt32 ( hexValue , 16 );