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ErrorProvider.DataSource Property

Gets or sets the data source that the ErrorProvider monitors.

Namespace:  System.Windows.Forms
Assembly:  System.Windows.Forms (in System.Windows.Forms.dll)

public Object DataSource { get; set; }

Property Value

Type: System.Object
A data source based on the IList interface to be monitored for errors. Typically, this is a DataSet to be monitored for errors.

The DataSource is a data source that you can attach to a control and that you want to monitor for errors. DataSource can be set to any collection that implements IList.

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.

The following code example shows how to use the ErrorProvider with a DataSource 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 void 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 = this ;
     errorProvider1.BlinkRate = 200 ;
     //... 
     // Since the ErrorProvider control does not have a visible component, 
     // it does not need to be added to the form. 
 }

 private void buttonSave_Click(object sender, System.EventArgs e)
 {
     // Checks for a bad post code.
     DataTable CustomersTable;
     CustomersTable = dataSet1.Tables["Customers"];
     foreach (DataRow row in (CustomersTable.Rows)) 
	 {
         if (Convert.ToBoolean(row["PostalCodeIsNull"])) 
         {
             row.RowError="The Customer details contain errors";
             row.SetColumnError("PostalCode", "Postal Code required");
         } 
     } 
 }

.NET Framework

Supported in: 4.5.2, 4.5.1, 4.5, 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

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.

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