Convert value in asp:TextBox to bool in try catch block (VB.net) : Type Convert « Language Basics « ASP.Net






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  2. Language Basics
  3. Type Convert

Convert value in asp:TextBox to bool in try catch block (VB.net)

<%@ Page Language="VB" %>
<script runat="server">
    Sub btnConvert_Click(sender As Object, e As EventArgs)
      Try
        lblToInt.Text = cint(txtValueToConvert.Text)
      Catch
        lblToInt.Text = "Could not convert to Integer"
    
      End Try
    
      Try
        lblToDateTime.Text = cdate(txtValueToConvert.Text)
    
      Catch
        lblToDateTime.Text = "Could not convert to Date/Time"
    
      End Try
    
      Try
        lblToBoolean.Text = cbool(txtValueToConvert.Text)
    
      Catch
        lblToBoolean.Text = "Could not convert to Boolean"
    
      End Try
    
    End Sub

</script>
<html>
<head>
</head>
<body>
    <form runat="server">
        <p>
            Original input: 
            <asp:TextBox id="txtValueToConvert" runat="server"></asp:TextBox>
            &nbsp;<asp:Button id="btnConvert" onclick="btnConvert_Click" runat="server" Text="Convert!"></asp:Button>
        </p>
        <p>
            Convert to Integer produces: 
            <asp:Label id="lblToInt" runat="server"></asp:Label>
        </p>
        <p>
            Convert to Date/Time produces: 
            <asp:Label id="lblToDateTime" runat="server"></asp:Label>
        </p>
        <p>
            Convert to Boolean produces: 
            <asp:Label id="lblToBoolean" runat="server"></asp:Label>
        </p>
    </form>
</body>
</html>








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