This article is entirely original, unless specified. This article should not be construed as the best practices white paper. NOTE: This article is purely for demonstration. errorProvider1.SetError(dateTimePicker1, "" ).errorProvider1.SetError(dateTimePicker1, "Appointment cannot be scheduled in the weekend. Please select a weekday" ).errorProvider1.SetError(textBox2, "Please enter your age as a number" ).errorProvider1.SetError(textBox2, "You must be atleast 18 years old to setup a test" ). errorProvider1.SetError(textBox2, "" ).errorProvider1.SetError(textBox2, "Please enter your Age" ).errorProvider1.SetError(textBox1, "" ).errorProvider1.SetError(textBox1, "Please enter your Name" ).MessageBox.Show( "Please enter valid data" ).MessageBox.Show( "Appointment will be created now" ).if (bValidName & bValidAge & bValidTestDate).bool bValidTestDate = ValidateTestDate().private void button1_Click( object sender, System.EventArgs e).private void dateTimePicker1_Validating( object sender, e).private void textBox2_Validating( object sender, e).private void textBox1_Validating( object sender, e).errorProvider1.ContainerControl = this.private void Form1_Load( object sender, System.EventArgs e).private void label1_Click( object sender, System.EventArgs e).button1.Click += new System.EventHandler( this. label4.Text = "Setup Driving Test Appointment" dateTimePicker1.Validating += new ( this. dateTimePicker1.Name = "dateTimePicker1" label1.Click += new System.EventHandler( this. To avoid conflicts at run time that can occur when changing DataSource and DataMember, you should use BindToDataAndErrors instead of setting DataSource and DataMember individually. DataSource can be set to any collection that implements IList. The DataSource is a data source that you can attach to a control and that you want to monitor for errors. Row.SetColumnError("PostalCode", "Postal Code required") Row.RowError = "The Customer details contain errors" If Convert.ToBoolean(row("PostalCodeIsNull")) Then Private Sub buttonSave_Click(ByVal sender As Object, ByVal e As System.EventArgs)ĬustomersTable = dataSet1.Tables("Customers") ' it does not need to be added to the form. ' Since the ErrorProvider control does not have a visible component, ' You set the DataSource to a data set, and the DataMember to a table.ĮrrorProvider1.DataMember = dataTable1.TableName Row.RowError="The Customer details contain errors" Private void buttonSave_Click(object sender, System.EventArgs e)ĬustomersTable = dataSet1.Tables įoreach (DataRow row in (CustomersTable.Rows)) Row->SetColumnError( "PostalCode", "Postal Code required" ) ĮrrorProvider1.DataMember = dataTable1.TableName Row->RowError = "The Customer details contain errors" System::Collections::IEnumerator^ myEnum = (CustomersTable->Rows)->GetEnumerator() ĭataRow^ row = safe_cast(myEnum->Current) Void buttonSave_Click( Object^ /*sender*/, System::EventArgs^ /*e*/ )ĬustomersTable = dataSet1->Tables it does not need to be added to the form. Since the ErrorProvider control does not have a visible component, You set the DataSource to a data set, and the DataMember to a table.ĮrrorProvider1->DataMember = dataTable1->TableName When you bind the DataSet to a control such as the DataGridView control, errors specified through DataRow objects appear as error glyphs in the DataGridView control. This code assumes you have created and populated a DataSet named dataSet1 containing a DataTable named dataTable1. The following code example shows how to use the ErrorProvider with a DataSource and DataMember to indicate a data error to the user.
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