conversion char in its ascii value

Question

4.00/5 (1 vote)

See more:

hiii...I am new in the coding world.....I am running a program ..where i have to convert a character in its Ascii value....I am getting anerror.....
"conversion of char in double is not possible"
plz help me ,....

VB

Protected Sub TextBox1_TextChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles tb_from.TextChanged
    Try

        tb_to.Text = tb_from.Text.Substring(0, tb_from.Text.Length - 3) + CStr(CInt(tb_from.Text.Substring(tb_from.Text.Length - 3)) + CInt(ddl_serial.Text))

        If ddl_stat.Text = "NBCC GR" Then
            If tb_from.Text.Substring(0, 1) <> "0" Then
                msgbox.WebMsgBox.Show(" serial should start from '0'")
            Else
                tb_to.Text = tb_from.Text.Substring(0, tb_from.Text.Length - 3) + CStr(CInt(tb_from.Text.Substring(tb_from.Text.Length - 3)) + CInt(ddl_serial.Text))
            End If
        End If

        If ddl_stat.Text = "NBCC Challan" Then
            If tb_from.Text.Substring(0, 1) <> "0" Then
                msgbox.WebMsgBox.Show(" serial should start from '0'")
            Else
                tb_to.Text = tb_from.Text.Substring(0, tb_from.Text.Length - 3) + CStr(CInt(tb_from.Text.Substring(tb_from.Text.Length - 3)) + CInt(ddl_serial.Text))
            End If
        End If

        If ddl_stat.Text = "GR" Or ddl_stat.Text = "GatePass" Or ddl_stat.Text = "Challan" Or ddl_stat.Text = "EB's" Or ddl_stat.Text = "D2D GatePass" Then

            Dim xyz As String

            xyz = tb_from.Text.Substring(0, 1)

            'If tb_from.Text.Substring(0, 1) <> Convert.ToInt32("A") Then

            If xyz <> System.Convert.ToInt32(xyz) Then

                'If xyz <> System.Convert.ToSByte(xyz) Then

                msgbox.WebMsgBox.Show("error")

            End If
            'System.Convert.ToSByte(xyz)
        End If
    Catch ex As Exception
        msgbox.WebMsgBox.Show(ex.ToString())
    End Try
End Sub

Posted 7-May-12 18:42pm

ashwani.pandita

Add a Solution

1 solution

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

MarqW · Answer 1 · 2012-05-08T02:23:00

Don't know what all that code is for, but you just use:

VB

Dim i As Integer = Asc("S")

The Convert.ToInt32 etc. are using to take a string that contains a number (ie, "25") and returns the numeric representation (25).

[EDIT]Added by LOSMAC ;)[/EDIT]

VB

Dim i As Integer = 0
Dim sString As String = "Hello Word!"

For i = 0 To sString.Length - 1
    MsgBox(sString.Substring(i, 1) & " = " & Asc(sString.Substring(i, 1)), MsgBoxStyle.Information, sString)
Next