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[Wang]

hello！

I use ExpressionEditor in a project ,the main code is: 

xaml:

 <TextBox x:Name="aaa"/>
<telerik:RadExpressionEditor Grid.Row="1" x:Name="ExpressionEditor"
ExpressionChanged="ExpressionEditor_ExpressionChanged"
ExpressionText="Sin(100)" />

 

cs:

private void ExpressionEditor_ExpressionChanged(object sender, RadRoutedEventArgs e)
        {
            try
            {
                dynamic dynamicExpression = ExpressionEditor.Expression;
                dynamic compiledExpression = dynamicExpression.Compile();
                object executionResult = compiledExpression();
                aaa.Text = executionResult.ToString();
            }
            catch
            {

            }
            
        }

 

the TextBox can show the result,but result preview of the RadExpressionEditor did not show the result,why? what should I do?

by the way,can we improve the RadExpressionEditor to make the programmer can  add custorm function or constants like Pi?

[Wang]

I solved the first problem by set the item property，thank you.

so can we improve the RadExpressionEditor to make the programmer can  add custorm function or constants like Pi?