使用 DataGridView 在 C# 中键入时搜索

Question

我只是想和大家分享一些知识，因为我花了将近半天的时间寻找"Search as you type"在VS2017中使用winforms的解决方案。我发现的大多数其他解决方案都使用 SQL 数据库作为数据源，或者推荐使用其他工具或控件，这不是我正在寻找的解决方案。

无论如何，我向 Web API 发出了一个请求，并将响应放入了一个列表中。然后，我将该列表用作 DataGridView 控件的数据源。然后我使用 Key_Up 作为触发器。以下是我的最终解决方案，效果很好！

希望对您有所帮助！

Answer 1

using Newtonsoft.Json;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.Data.SqlClient;

namespace AddUser_API
{
    public partial class Form1 : Form
    {

        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            /*Makes the request to API for the groups when the form loads. I obviously have a different class that handles this request*/
            Request userClient = new Request();

            //endpoint is a GET request
            userClient.endPoint = userClient.endPoint;
            userClient.httpMethod = httpVerb.GET;

            string strResponse = string.Empty;

            strResponse = userClient.makeRequest();

            /*This will put the response into a list then fill the datagridview control with the Web API response*/

            List<getUser> grpName = JsonConvert.DeserializeObject<List<getUser>>(strResponse);

            dgvUserList.DataSource = grpName;

//Cosmetics
                dgvUserList.Columns[0].DefaultCellStyle.Padding = new Padding(0, 0, 28, 0);
                dgvUserList.Columns[1].DefaultCellStyle.Padding = new Padding(0, 0, 28, 0);   
            }

/* the following key up will allow the user to search as they type in the textbox control*/

        private void txtbxByUsername_KeyUp(object sender, KeyEventArgs e)
        {
            string searchValue = txtbxByUsername.Text.ToLower();
            dgvUserList.SelectionMode = DataGridViewSelectionMode.FullRowSelect;
            try
            {
                foreach (DataGridViewRow row in dgvUserList.Rows)
                {
                    for (int i = 0; i < row.Cells.Count; i++)
                    {
                        if (row.Cells[i].Value != null && row.Cells[i].Value.ToString().ToLower().Contains(searchValue))
                        {
                            int rowIndex = row.Index;
                            dgvUserList.Rows[rowIndex].Selected = true;
                            break;
                        }

                    }

                }
            }
            catch (Exception exc)
            {
                MessageBox.Show(exc.Message);
            }
        }
    }
}

使用 DataGridView 在 C# 中键入时搜索

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