| Author: kingfisher 12 May 2008 | Member Level: Silver Points : 2 |
CHNumeric = IsNumeric(txtbox1.Text)
If CHNumeric = False Then
MsgBox("Enter numeric value Only", MsgBoxStyle.Exclamation, Application.ProductName)
txtbox1.Focus()
Exit Sub
End If
'----------> I have used an inbuilt function "IsNumeric" which returns boolean value after checking for numeric values
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| Author: santhoshkumar 23 May 2008 | Member Level: Gold Points : 2 |
By default the textbox value is string right, then how can v check isNumeric for string value.
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| Author: ranipriya 04 Jun 2008 | Member Level: Gold Points : 2 |
Santhosh, No need of complex code use only simple code
Check this vb.net code
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
If Not IsNumeric(t1.Text) Then
MsgBox("Enter numeric value", MsgBoxStyle.Critical)
Else
MsgBox("You entered " & t1.Text,
MsgBoxStyle.Information)
End If
End Sub
Function IsNumeric is there..
Public Function IsNumeric(ByVal Expression As Object) As Boolean
Member of: Microsoft.VisualBasic.Information
Summary:
Returns a Boolean value indicating whether an expression can be evaluated as a number.
OK....
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| Author: santhoshkumar 04 Jun 2008 | Member Level: Gold Points : 0 |
ok. thank you ranipriya
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| Author: sivangari 11 Jun 2008 | Member Level: Gold Points : 2 |
protected void Button1_Click(object sender, EventArgs e)
{
string str = TextBox1.Text;
string str1 = TextBox4.Text;
int result = 0;
if( (int.TryParse(str, System.Globalization.NumberStyles.Integer, System.Globalization.NumberFormatInfo.CurrentInfo, out result)) && (int.TryParse(str1, System.Globalization.NumberStyles.Integer, System.Globalization.NumberFormatInfo.CurrentInfo, out result)))
{
Label1.Text = "Number";
}
else
{
Label1.Text = "string";
}
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| Author: KR 12 Dec 2008 | Member Level: Gold Points : 1 |
Hi,
Find the below code,
private void button1_Click(object sender, EventArgs e)
{
int s;
if (!int.TryParse(textBox1.Text, out s))
{
MessageBox.Show("Charactes not allowed");
}
}
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| Author: Abhinav Misra 14 Dec 2008 | Member Level: Silver Points : 1 |
dont u think that it is better to use
java script or compare validation control and set its property
for type check
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