ASP.Net/Development/Math

Материал из .Net Framework эксперт
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Math.Abs (C#)

   <source lang="csharp">

<%@ page Language="c#" runat="server" %> <script language="c#" runat="server"> 

 void Page_Load()
 {
   pi.Text = Math.PI.ToString();
   exp.Text = Math.E.ToString();
 }
 void Update(object sender, EventArgs e)
 {
   try 
   {
     double dblInput = Convert.ToDouble(input.Text);
     sqrt_input.Text = dblInput.ToString();
     sqrt_result.Text = Math.Sqrt(dblInput).ToString();
     abs_input.Text = dblInput.ToString();
     abs_result.Text = Math.Abs(dblInput).ToString();
     log_input.Text = dblInput.ToString();
     log_result.Text = Math.Log10(dblInput).ToString();
   } catch {
     sqrt_result.Text = "";
     abs_result.Text = "";
     log_result.Text = "";
     errormessage.Text = "Error occurred in input";
   }
 }

</script> <html> 

 <body>

   Pi = <asp:label id="pi" runat="server" />

   Exponential Constant = <asp:label id="exp" runat="server" />

   <form runat="server">
   Input = <asp:textbox id="input" runat="server" />
   <asp:button text="Submit" runat="server" onclick="Update" />
</form>
   Square root of <asp:label id="sqrt_input" runat="server"/>
   = <asp:label id="sqrt_result" runat="server" />

   Absolute Value of <asp:label id="abs_input" runat="server"/>
   = <asp:label id="abs_result" runat="server" />

   Logarithm of <asp:label id="log_input" runat="server"/>
   = <asp:label id="log_result" runat="server" />

   <asp:label id="errormessage" runat="server" />

 </body>

</html> 

      </source>


Math.Abs (VB.net)

   <source lang="csharp">

<%@ page language="vb" runat="server" %> <script runat="server"> 

 Sub Page_Load()
   pi.text = Math.PI
   exp.text = Math.E
 End Sub
 Sub Update(Sender As Object, E As EventArgs)
   Dim dblInput As Double = CDbl(input.text)
   sqrt_input.text = dblInput
   sqrt_result.text = Math.Sqrt(dblInput)

   abs_input.text = dblInput
   abs_result.text = Math.Abs(dblInput)

   log_input.text = dblInput
   log_result.text = Math.Log10(dblInput)
 End Sub

</script> <html> 

 <body>

   Pi = <asp:label id="pi" runat="server" />

   Exponential Constant = <asp:label id="exp" runat="server" />

   <form runat="server">
   Input = <asp:textbox id="input" runat="server" />
   <asp:button text="Submit" runat="server" onclick="update" />
</form>
   Square root of <asp:label id="sqrt_input" runat="server"/>
   = <asp:label id="sqrt_result" runat="server" />

   Absolute Value of <asp:label id="abs_input" runat="server"/>
   = <asp:label id="abs_result" runat="server" />

   Logarithm of <asp:label id="log_input" runat="server"/>
   = <asp:label id="log_result" runat="server" />

 </body>

</html> 

      </source>


Math.E (C#)

   <source lang="csharp">

<%@ page Language="c#" runat="server" %> <script language="c#" runat="server"> 

 void Page_Load()
 {
   pi.Text = Math.PI.ToString();
   exp.Text = Math.E.ToString();
 }
 void Update(object sender, EventArgs e)
 {
   try 
   {
     double dblInput = Convert.ToDouble(input.Text);
     sqrt_input.Text = dblInput.ToString();
     sqrt_result.Text = Math.Sqrt(dblInput).ToString();
     abs_input.Text = dblInput.ToString();
     abs_result.Text = Math.Abs(dblInput).ToString();
     log_input.Text = dblInput.ToString();
     log_result.Text = Math.Log10(dblInput).ToString();
   } catch {
     sqrt_result.Text = "";
     abs_result.Text = "";
     log_result.Text = "";
     errormessage.Text = "Error occurred in input";
   }
 }

</script> <html> 

 <body>

   Pi = <asp:label id="pi" runat="server" />

   Exponential Constant = <asp:label id="exp" runat="server" />

   <form runat="server">
   Input = <asp:textbox id="input" runat="server" />
   <asp:button text="Submit" runat="server" onclick="Update" />
</form>
   Square root of <asp:label id="sqrt_input" runat="server"/>
   = <asp:label id="sqrt_result" runat="server" />

   Absolute Value of <asp:label id="abs_input" runat="server"/>
   = <asp:label id="abs_result" runat="server" />

   Logarithm of <asp:label id="log_input" runat="server"/>
   = <asp:label id="log_result" runat="server" />

   <asp:label id="errormessage" runat="server" />

 </body>

</html> 

      </source>


Math.E (VB.net)

   <source lang="csharp">

<%@ page language="vb" runat="server" %> <script runat="server"> 

 Sub Page_Load()
   pi.text = Math.PI
   exp.text = Math.E
 End Sub
 Sub Update(Sender As Object, E As EventArgs)
   Dim dblInput As Double = CDbl(input.text)
   sqrt_input.text = dblInput
   sqrt_result.text = Math.Sqrt(dblInput)

   abs_input.text = dblInput
   abs_result.text = Math.Abs(dblInput)

   log_input.text = dblInput
   log_result.text = Math.Log10(dblInput)
 End Sub

</script> <html> 

 <body>

   Pi = <asp:label id="pi" runat="server" />

   Exponential Constant = <asp:label id="exp" runat="server" />

   <form runat="server">
   Input = <asp:textbox id="input" runat="server" />
   <asp:button text="Submit" runat="server" onclick="update" />
</form>
   Square root of <asp:label id="sqrt_input" runat="server"/>
   = <asp:label id="sqrt_result" runat="server" />

   Absolute Value of <asp:label id="abs_input" runat="server"/>
   = <asp:label id="abs_result" runat="server" />

   Logarithm of <asp:label id="log_input" runat="server"/>
   = <asp:label id="log_result" runat="server" />

 </body>

</html> 

      </source>


Math.Log10 (VB.net)

   <source lang="csharp">

<%@ page language="vb" runat="server" %> <script runat="server"> 

 Sub Page_Load()
   pi.text = Math.PI
   exp.text = Math.E
 End Sub
 Sub Update(Sender As Object, E As EventArgs)
   Dim dblInput As Double = CDbl(input.text)
   sqrt_input.text = dblInput
   sqrt_result.text = Math.Sqrt(dblInput)

   abs_input.text = dblInput
   abs_result.text = Math.Abs(dblInput)

   log_input.text = dblInput
   log_result.text = Math.Log10(dblInput)
 End Sub

</script> <html> 

 <body>

   Pi = <asp:label id="pi" runat="server" />

   Exponential Constant = <asp:label id="exp" runat="server" />

   <form runat="server">
   Input = <asp:textbox id="input" runat="server" />
   <asp:button text="Submit" runat="server" onclick="update" />
</form>
   Square root of <asp:label id="sqrt_input" runat="server"/>
   = <asp:label id="sqrt_result" runat="server" />

   Absolute Value of <asp:label id="abs_input" runat="server"/>
   = <asp:label id="abs_result" runat="server" />

   Logarithm of <asp:label id="log_input" runat="server"/>
   = <asp:label id="log_result" runat="server" />

 </body>

</html> 

      </source>


Math.PI (C#)

   <source lang="csharp">

<%@ page Language="c#" runat="server" %> <script language="c#" runat="server"> 

 void Page_Load()
 {
   pi.Text = Math.PI.ToString();
   exp.Text = Math.E.ToString();
 }
 void Update(object sender, EventArgs e)
 {
   try 
   {
     double dblInput = Convert.ToDouble(input.Text);
     sqrt_input.Text = dblInput.ToString();
     sqrt_result.Text = Math.Sqrt(dblInput).ToString();
     abs_input.Text = dblInput.ToString();
     abs_result.Text = Math.Abs(dblInput).ToString();
     log_input.Text = dblInput.ToString();
     log_result.Text = Math.Log10(dblInput).ToString();
   } catch {
     sqrt_result.Text = "";
     abs_result.Text = "";
     log_result.Text = "";
     errormessage.Text = "Error occurred in input";
   }
 }

</script> <html> 

 <body>

   Pi = <asp:label id="pi" runat="server" />

   Exponential Constant = <asp:label id="exp" runat="server" />

   <form runat="server">
   Input = <asp:textbox id="input" runat="server" />
   <asp:button text="Submit" runat="server" onclick="Update" />
</form>
   Square root of <asp:label id="sqrt_input" runat="server"/>
   = <asp:label id="sqrt_result" runat="server" />

   Absolute Value of <asp:label id="abs_input" runat="server"/>
   = <asp:label id="abs_result" runat="server" />

   Logarithm of <asp:label id="log_input" runat="server"/>
   = <asp:label id="log_result" runat="server" />

   <asp:label id="errormessage" runat="server" />

 </body>

</html> 

      </source>


Math.Sqrt (VB.net)

   <source lang="csharp">

<%@ page language="vb" runat="server" %> <script runat="server"> 

 Sub Page_Load()
   pi.text = Math.PI
   exp.text = Math.E
 End Sub
 Sub Update(Sender As Object, E As EventArgs)
   Dim dblInput As Double = CDbl(input.text)
   sqrt_input.text = dblInput
   sqrt_result.text = Math.Sqrt(dblInput)

   abs_input.text = dblInput
   abs_result.text = Math.Abs(dblInput)

   log_input.text = dblInput
   log_result.text = Math.Log10(dblInput)
 End Sub

</script> <html> 

 <body>

   Pi = <asp:label id="pi" runat="server" />

   Exponential Constant = <asp:label id="exp" runat="server" />

   <form runat="server">
   Input = <asp:textbox id="input" runat="server" />
   <asp:button text="Submit" runat="server" onclick="update" />
</form>
   Square root of <asp:label id="sqrt_input" runat="server"/>
   = <asp:label id="sqrt_result" runat="server" />

   Absolute Value of <asp:label id="abs_input" runat="server"/>
   = <asp:label id="abs_result" runat="server" />

   Logarithm of <asp:label id="log_input" runat="server"/>
   = <asp:label id="log_result" runat="server" />

 </body>

</html> 

      </source>


Use math function: Math.PI (VB.net)

   <source lang="csharp">

<%@ page language="vb" runat="server" %> <script runat="server"> 

 Sub Page_Load()
   pi.text = Math.PI
   exp.text = Math.E
 End Sub
 Sub Update(Sender As Object, E As EventArgs)
   Dim dblInput As Double = CDbl(input.text)
   sqrt_input.text = dblInput
   sqrt_result.text = Math.Sqrt(dblInput)

   abs_input.text = dblInput
   abs_result.text = Math.Abs(dblInput)

   log_input.text = dblInput
   log_result.text = Math.Log10(dblInput)
 End Sub

</script> <html> 

 <body>

   Pi = <asp:label id="pi" runat="server" />

   Exponential Constant = <asp:label id="exp" runat="server" />

   <form runat="server">
   Input = <asp:textbox id="input" runat="server" />
   <asp:button text="Submit" runat="server" onclick="update" />
</form>
   Square root of <asp:label id="sqrt_input" runat="server"/>
   = <asp:label id="sqrt_result" runat="server" />

   Absolute Value of <asp:label id="abs_input" runat="server"/>
   = <asp:label id="abs_result" runat="server" />

   Logarithm of <asp:label id="log_input" runat="server"/>
   = <asp:label id="log_result" runat="server" />

 </body>

</html> 

      </source>
Источник — «http://nfex.ru/index.php?title=ASP.Net/Development/Math&oldid=1701»