Gets or sets the data source that the ErrorProvider monitors.
Assembly: System.Windows.Forms (in System.Windows.Forms.dll)
The is a data source that you can attach to a control and that you want to monitor for errors. can be set to any collection that implements IList.
The following code example shows how to use the ErrorProvider with a and DataMember to indicate a data error to the user. This code assumes you have created and populated a DataSet named dataSet1 containing a DataTable named dataTable1. 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.
Private Sub InitializeComponent() ' Standard control setup. '.... ' You set the DataSource to a data set, and the DataMember to a table. errorProvider1.DataSource = dataSet1 errorProvider1.DataMember = dataTable1.TableName errorProvider1.ContainerControl = Me errorProvider1.BlinkRate = 200 End Sub 'InitializeComponent '... ' Since the ErrorProvider control does not have a visible component, ' it does not need to be added to the form. Private Sub buttonSave_Click(ByVal sender As Object, ByVal e As System.EventArgs) ' Checks for a bad post code. Dim CustomersTable As DataTable CustomersTable = dataSet1.Tables("Customers") Dim row As DataRow For Each row In CustomersTable.Rows If Convert.ToBoolean(row("PostalCodeIsNull")) Then row.RowError = "The Customer details contain errors" row.SetColumnError("PostalCode", "Postal Code required") End If Next row End Sub 'buttonSave_Click
Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.