winform 还是webformwebform有验证控件C# 複製程式碼//Handle column changing events on the Customers table private void Customers_ColumnChanging(object sender, System.Data.DataColumnChangeEventArgs e) { //Only check for errors in the Product column if (e.Column.ColumnName.Equals("Product")) { //Do not allow "Automobile" as a product if (e.ProposedValue.Equals("Automobile")) { object badValue = e.ProposedValue; e.ProposedValue = "Bad Data"; e.Row.RowError = "The Product column contains an error"; e.Row.SetColumnError(e.Column, "Product cannot be " + badValue); } } }
还是webformwebform有验证控件C# 複製程式碼//Handle column changing events on the Customers table
private void Customers_ColumnChanging(object sender, System.Data.DataColumnChangeEventArgs e) { //Only check for errors in the Product column
if (e.Column.ColumnName.Equals("Product")) { //Do not allow "Automobile" as a product
if (e.ProposedValue.Equals("Automobile")) {
object badValue = e.ProposedValue;
e.ProposedValue = "Bad Data";
e.Row.RowError = "The Product column contains an error";
e.Row.SetColumnError(e.Column, "Product cannot be " + badValue);
}
}
}