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Form1.cs
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Form1.cs
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using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using DevExpress.Data.Filtering;
using DevExpress.Data;
namespace FilterEvent
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void Form1_Load(object sender, EventArgs e) {
DataSet ds = new DataSet();
ds.ReadXml("nwind.xml");
this.GridControl.DataSource = ds;
this.GridControl.DataMember = "Orders";
this.GridView.ActiveFilterCriteria = CriteriaOperator.Parse("Freight > 0");
}
private void GridView_SubstituteFilter(object sender, SubstituteFilterEventArgs e) {
e.Filter &= CriteriaOperator.Parse("getyear(OrderDate) = ?", Convert.ToInt32(this.beiShowByYear.EditValue));
}
private void beiShowByYear_EditValueChanged(object sender, EventArgs e) {
CriteriaOperator filter = this.GridView.ActiveFilterCriteria;
this.GridView.BeginDataUpdate();
try {
this.GridView.ActiveFilterCriteria = null;
this.GridView.ActiveFilterCriteria = filter;
} finally {
this.GridView.EndDataUpdate();
}
}
}
}