Winform中DataGridview的基本用法

一 dataGridView数据控件的数据绑定和对数据的操作

一些基本的功能都已实现相关下载：DataGridViewTest.rar

View Code

1 using System;
2 using System.Collections.Generic;
3 using System.ComponentModel;
4 using System.Data;
5 using System.Data.SqlClient;
6 using System.Drawing;
7 using System.Text;
8 using System.Windows.Forms;
9
10 namespace DataGridViewTest
11 {
12 public partial class Form1 : Form
13 {
14 public Form1()
15 {
16 InitializeComponent();
17 }
18
19 int Fcellvalue;　　//用于保存主键的值
20
21 SqlDataAdapter da;
22
23 SqlConnection conn;
24
25 SqlCommand cmd = new SqlCommand();
26
27 string connstr = "Data Source = .;database=Test;uid=sa;pwd=123;";
28
29 private void Form1_Load(object sender, EventArgs e)
30 {
31
32
33 Getdate();
34 dataGridView1.Columns[0].Visible = false;
35
36 dataGridView1.Columns[1].HeaderText = "姓名";
37 dataGridView1.Columns[2].HeaderText = "性别";
38 dataGridView1.Columns[3].HeaderText = "民族";
39 dataGridView1.Columns[4].HeaderText = "公司";
40 dataGridView1.Columns[5].HeaderText = "职位";
41 dataGridView1.Columns[6].HeaderText = "地址";
42 }
43
44 private void timer1_Tick(object sender, EventArgs e)
45 {
46 toolStripStatusLabel5.Text ="当前时间："+ DateTime.Now.ToString();
47 }
48
49 //绑定数据
50 public void Getdate()
51 {
52 try
53 {
54 conn = new SqlConnection(connstr);
55
56 conn.Open();
57
58 string strcmdsel = "select * from T1";
59
60 da = new SqlDataAdapter(strcmdsel, connstr);
61
62 DataSet ds = new DataSet();
63
64 da.Fill(ds);
65
66 dataGridView1.DataSource = ds.Tables[0].DefaultView;
67
68 }
69 catch (SqlException sql)
70 {
71 MessageBox.Show(sql.ToString());
72 }
73 catch (Exception ex)
74 {
75 MessageBox.Show(ex.ToString());
76 }
77 finally
78 {
79 conn.Close();
80 }
81
82 }
83
84 //刷新数据
85 private void button5_Click(object sender, EventArgs e)
86 {
87 Getdate();
88 }
89
90 //单击行标题的时候取到这一行第一列的值即主键的值
91 private void dataGridView1_RowHeaderMouseClick(object sender, DataGridViewCellMouseEventArgs e)
92 {
93 Fcellvalue = Convert.ToInt32(dataGridView1.CurrentRow.Cells[0].Value); //取到主键
94 }
95
96 //查询满足条件的数据
97 private void button1_Click(object sender, EventArgs e)
98 {
99 try
100 {
101
102 if (textBox1.Text.Trim() == "")
103 {
104 MessageBox.Show("请输入查询条件！！！");
105 }
106 else
107 {
108 conn = new SqlConnection(connstr);
109
110 conn.Open();
111
112 string selectLevel = "select * from T1 where LevelInfo='" + textBox1.Text.Trim() + "'";
113
114 da = new SqlDataAdapter(selectLevel, connstr);
115
116 DataSet ds = new DataSet();
117
118 da.Fill(ds);
119
120 dataGridView1.DataSource = ds.Tables[0].DefaultView;
121
122 }
123
124 }
125 catch (SqlException sql)
126 {
127 MessageBox.Show(sql.ToString());
128 }
129 catch (Exception ex)
130 {
131 MessageBox.Show(ex.ToString());
132 }
133 finally
134 {
135 conn.Close();
136 }
137
138 textBox1.Text　=　"";
139 }
140
141 //删除选中行
142 private void button2_Click(object sender, EventArgs e)
143 {
144 try
145 {
146 conn = new SqlConnection(connstr);
147
148 conn.Open();
149
150 string strcmddel = "delete from T1 where ID=" + Fcellvalue;
151
152 cmd.Connection = conn;
153 cmd.CommandText = strcmddel;
154 cmd.CommandType = CommandType.Text;
155
156 cmd.ExecuteNonQuery();
157
158 Getdate();
159 }
160 catch (SqlException sql)
161 {
162 MessageBox.Show(sql.ToString());
163 }
164 catch (Exception ex)
165 {
166 MessageBox.Show(ex.ToString());
167 }
168 finally
169 {
170 conn.Close();
171 }
172
173 }
174
175 //新增一行数据
176 private void button3_Click(object sender, EventArgs e)
177 {
178
179 try
180 {
181 conn = new SqlConnection(connstr);
182
183 conn.Open();
184
185 string F = dataGridView1.Rows[dataGridView1.CurrentRow.Index].Cells[1].Value.ToString();
186 string S = dataGridView1.Rows[dataGridView1.CurrentRow.Index].Cells[2].Value.ToString();
187 string T = dataGridView1.Rows[dataGridView1.CurrentRow.Index].Cells[3].Value.ToString();
188 string Four = dataGridView1.Rows[dataGridView1.CurrentRow.Index].Cells[4].Value.ToString();
189 string Five = dataGridView1.Rows[dataGridView1.CurrentRow.Index].Cells[5].Value.ToString();
190 string Six = dataGridView1.Rows[dataGridView1.CurrentRow.Index].Cells[6].Value.ToString();
191
192 string strcmdIn = " insert into T1 values('" + F + "','" + S + "','" + T + "','" + Four + "','" + Five + "','" + Six + "')";
193 cmd.Connection = conn;
194 cmd.CommandText = strcmdIn;
195 cmd.CommandType = CommandType.Text;
196
197 cmd.ExecuteNonQuery();
198
199 Getdate();
200 }
201 catch (SqlException sql)
202 {
203 MessageBox.Show(sql.ToString());
204 }
205 catch (Exception ex)
206 {
207 MessageBox.Show(ex.ToString());
208 }
209 finally
210 {
211 conn.Close();
212 }
213 }
214
215 //修改数据项
216 private void button4_Click(object sender, EventArgs e)
217 {
218
219
220 try
221 {
222 conn = new SqlConnection(connstr);
223
224 conn.Open();
225
226 string F = dataGridView1.Rows[dataGridView1.CurrentRow.Index].Cells[1].Value.ToString();
227 string S = dataGridView1.Rows[dataGridView1.CurrentRow.Index].Cells[2].Value.ToString();
228 string T = dataGridView1.Rows[dataGridView1.CurrentRow.Index].Cells[3].Value.ToString();
229 string Four = dataGridView1.Rows[dataGridView1.CurrentRow.Index].Cells[4].Value.ToString();
230 string Five = dataGridView1.Rows[dataGridView1.CurrentRow.Index].Cells[5].Value.ToString();
231 string Six = dataGridView1.Rows[dataGridView1.CurrentRow.Index].Cells[6].Value.ToString();
232
233 string strcmdUpdate = " update T1 set Name='" + F + "',Sex='" + S + "'," +
234 " Minzu='" + T + "',Com='" + Four + "',LevelInfo='" + Five + "',Address='" + Six + "' where ID = " + dataGridView1.CurrentRow.Cells[0].Value;
235 cmd.Connection = conn;
236 cmd.CommandText = strcmdUpdate;
237 cmd.CommandType = CommandType.Text;
238
239 cmd.ExecuteNonQuery();
240
241 Getdate();
242 }
243 catch (SqlException sql)
244 {
245 MessageBox.Show(sql.ToString());
246 }
247 catch (Exception ex)
248 {
249 MessageBox.Show(ex.ToString());
250 }
251 finally
252 {
253 conn.Close();
254 }
255 }
256
257 private void dataGridView1_CellClick(object sender, DataGridViewCellEventArgs e)
258 {
259 if (e.RowIndex == -1)
260 return;
261
262 dataGridView1.Rows[e.RowIndex].Cells[1].Style.ForeColor = Color.Red;
263 dataGridView1.Rows[e.RowIndex].Cells[2].Style.ForeColor = Color.Red;
264 dataGridView1.Rows[e.RowIndex].Cells[3].Style.ForeColor = Color.Red;
265 dataGridView1.Rows[e.RowIndex].Cells[4].Style.ForeColor = Color.Red;
266 dataGridView1.Rows[e.RowIndex].Cells[5].Style.ForeColor = Color.Red;
267 dataGridView1.Rows[e.RowIndex].Cells[6].Style.ForeColor = Color.Red;
268 }
269
270 private void dataGridView1_CellLeave(object sender, DataGridViewCellEventArgs e)
271 {
272 if (e.RowIndex == -1)
273 return;
274 dataGridView1.Rows[e.RowIndex].Cells[1].Style.ForeColor = Color.Black;
275 dataGridView1.Rows[e.RowIndex].Cells[2].Style.ForeColor = Color.Black;
276 dataGridView1.Rows[e.RowIndex].Cells[3].Style.ForeColor = Color.Black;
277 dataGridView1.Rows[e.RowIndex].Cells[4].Style.ForeColor = Color.Black;
278 dataGridView1.Rows[e.RowIndex].Cells[5].Style.ForeColor = Color.Black;
279 dataGridView1.Rows[e.RowIndex].Cells[6].Style.ForeColor = Color.Black;
280 }
281
282 }
283 }

转载于:https://www.cnblogs.com/ShuiMu/articles/2001441.html

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