How Column Accept Unique Value Per Row Using WPF DataGrid?
You can make a specific column accept unique value per row using SfDataGrid.CurrentCellValidating event in WPF DataGrid (SfDataGrid).
<syncfusion:SfDataGrid x:Name="dataGrid" ItemsSource="{Binding Orders}" AutoGenerateColumns="False" AllowEditing="True" CurrentCellValidating="dataGrid_CurrentCellValidating" >
<syncfusion:SfDataGrid.Columns>
<syncfusion:GridTextColumn MappingName="OrderID" HeaderText="Order ID" />
<syncfusion:GridTextColumn MappingName="CustomerID" HeaderText="Customer ID" />
<syncfusion:GridTextColumn MappingName="Country"/>
<syncfusion:GridTextColumn MappingName="CustomerName" HeaderText="Customer Name" />
<syncfusion:GridTextColumn MappingName="ShipCity" HeaderText="Ship City" />
</syncfusion:SfDataGrid.Columns>
</syncfusion:SfDataGrid>
private void dataGrid_CurrentCellValidating(object sender, Syncfusion.UI.Xaml.Grid.CurrentCellValidatingEventArgs e)
{
if (e.Column.MappingName == "OrderID")
{
for (int i = 0; i < dataGrid.View.Records.Count; i++)
{
if ((this.dataGrid.View.Records[i].Data as OrderInfo).OrderID.ToString().Equals((e.NewValue.ToString())) && (e.NewValue.ToString() != e.OldValue.ToString()))
{
e.IsValid = false;
e.ErrorMessage = "Invalid Value";
break;
}
}
}
}
View WPF DataGrid Unique Value Demo in GitHub.
Conclusion
I hope you enjoyed learning how column accept unique value per row using WPF DataGrid.
You can refer to our WPF Grid feature tour page to know about its other groundbreaking feature representations and documentation, and how to quickly get started for configuration specifications. You can also explore our WPF Grid example to understand how to create and manipulate data.
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