Question

我只想与大家分享一些知识，因为我花了将近半天的时间在VS2017中使用Winforms搜索“键入时搜索”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，而这并不是我一直在寻找的解决方案。

无论如何，我向Web API发出了请求，并将响应放入列表中。然后，我将该列表用作DataGridView控件的DataSource。然后，我使用Key_Up作为触发器。下面是我的最终解决方案，效果很好！

希望这会有所帮助！

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＃中键入时进行搜索

1 个答案: