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  • C#使用Linq对DataGridView进行模糊查找

     针对DataGridView中已进行过数据绑定,即已向DataGridView中添加了一些数据,可以结合Linq查询,并让匹配查询的行高亮显示,如下图:

     

      

     

      具体实现如下:

     

    [csharp] view plain copy

    using System;

    using System.Collections.Generic;

    using System.Linq;

    using System.Windows.Forms;

     

    namespace Maxes_PC_Client {

    public partial class frmWelcome : Form {

    private int beforeMatchedRowIndex = 0;

     

    public frmWelcome()

    {

    InitializeComponent();

    }

     

    private void frmWelcome_Load(object sender, EventArgs e) {

    this.dataGridViewInit();

    }

     

    /// <summary>

    /// DataGridView添加数据、初始化

    /// </summary>

    private void dataGridViewInit() {

    Dictionary<String, String> map = new Dictionary<String, String>();

    map.Add("Lily", "22");

    map.Add("Andy", "25");

    map.Add("Peter", "24");

     

    // 在这里必须创建一个BindIngSource对象,用该对象接收Dictionary<T, K>泛型集合的对象

    BindingSource bindingSource = new BindingSource();

    // 将泛型集合对象的值赋给BindingSourc对象的数据源

    bindingSource.DataSource = map;

     

    this.dataGridView.DataSource = bindingSource;

    }

     

    private void SearchButton_Click(object sender, EventArgs e) {

    if (this.KeyWord.Text.Equals("")) {

    return;

    }

     

    // Linq模糊查询

    IEnumerable<DataGridViewRow> enumerableList = this.dataGridView.Rows.Cast<DataGridViewRow>();

    List<DataGridViewRow> list = (from item in enumerableList

    where item.Cells[0].Value.ToString().IndexOf(this.KeyWord.Text) >= 0

    select item).ToList();

     

    // 恢复之前行的背景颜色为默认的白色背景

    this.dataGridView.Rows[beforeMatchedRowIndex].DefaultCellStyle.BackColor = System.Drawing.Color.White;

     

    if (list.Count > 0) {

    // 查找匹配行高亮显示

    int matchedRowIndex = list[0].Index;

    this.dataGridView.Rows[matchedRowIndex].DefaultCellStyle.BackColor = System.Drawing.Color.Yellow;

    this.beforeMatchedRowIndex = matchedRowIndex;

    }

    }

    }

    }

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  • 原文地址:https://www.cnblogs.com/soany/p/5343644.html
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