' Return a validation summary string with all the error messages, if any,' of the controls inside the specified container,' associated to an ErrorProvider control' ' Example:' Dim summary As String = ""' ' display the validation summary for all the controls on the form' summary = GetValidationSummary(Me, ErrorProvider1)' If summary.Length > 0 Then' MessageBox.Show(summary, "ERRORS", MessageBoxButtons.OK,' MessageBoxIcon.Error)' End If' ' display the validation summary for all the controls inside a GroupBox' summary = GetValidationSummary(GroupBox1, ErrorProvider1)' If summary.Length > 0 Then' MessageBox.Show(summary, "ERRORS", MessageBoxButtons.OK,' MessageBoxIcon.Error)' End IfFunction GetValidationSummary(ByVal container As Control, _ ByVal errorProv As ErrorProvider) As String Return GetValidationSummary(container, errorProv, " - ")End FunctionFunction GetValidationSummary(ByVal container As Control, _ ByVal errorProv As ErrorProvider, ByVal prefix As String) As String Dim summary As New System.Text.StringBuilder Dim ctl As Control ' for each control in the container (and its sub controls)... For Each ctl In GetAllControls(container) ' check the associated error message Dim msg As String = errorProv.GetError(ctl) ' if the error message is not null, add it to the summary If msg.Length > 0 Then If summary.Length > 0 Then summary.Append(Environment.NewLine) End If summary.Append(prefix) summary.Append(msg) End If Next Return summary.ToString()End Function
What We Should Expect from Cell Phone Tech in the Near Future
May 31, 2023
The earliest cell phones included boxy designs full of buttons and antennas, and they only made calls. Needless to say, we’ve come a long way from those classic brick phones
