实例介绍
【实例简介】 其中 用的是access数据库，如本机未安装access,则需先安装 AccessDatabaseEngine.exe
【实例截图】
【核心代码】
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;
namespace 权限的控件
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
DataTable dt;
string Is_add = "";//控件是添加还是修改
string Sql;
int c1 = 0, c2 = 0, c3 = 0, c4 = 0, c5 = 0;
int ID = -1;
//添加
private void button1_Click(object sender, EventArgs e)
{
T1.Select();
Is_add = "AD";
Is_on();
//添加状态,修改,删除不可用
button2.Enabled = false;
button3.Enabled = false;
button4.Enabled = true;
Clear();
}
//清零初始化,复选框按键全为未选中
void Clear()
{
T1.Text = "";
C1.Checked = false;
C2.Checked = false;
C3.Checked = false;
C4.Checked = false;
C5.Checked = false;
}
//全部选中
void All_Checked()
{
C1.Checked = true ;
C2.Checked = true;
C3.Checked = true;
C4.Checked = true;
C5.Checked = true;
}
int hr;
//单元单元格任意位置时发生
private void dataGridView1_CellClick(object sender, DataGridViewCellEventArgs e)
{
Is_off();
Clear();
try
{
hr = Data1.CurrentCell.RowIndex;
ID = int.Parse(Data1[1, hr].Value.ToString());
T1.Text = Data1[2, hr].Value.ToString(); //行和列和DT表相反
T1.Text = T1.Text.Replace("‘", "'");
T1.Text = T1.Text.Replace("蔡陆飞最棒", "蔡陆飞");
if (Data1[3, hr].Value.ToString() == "1") C1.Checked = true;
if (Data1[4, hr].Value.ToString() == "1") C2.Checked = true;
if (Data1[5, hr].Value.ToString() == "1") C3.Checked = true;
if (Data1[6, hr].Value.ToString() == "1") C4.Checked = true;
if (Data1[7, hr].Value.ToString() == "1") C5.Checked = true;
}
catch { }
}
//即复选框可用状态
private void Is_on()
{
All_ck.Enabled = true;
All_ck.Checked = false;
T1.Enabled = true;
C1.Enabled = true;
C2.Enabled = true;
C3.Enabled = true;
C4.Enabled = true;
C5.Enabled = true;
}
//复选框全为不可用状
private void Is_off()
{
All_ck.Enabled = false;
T1.Enabled = false;
C1.Enabled = false;
C2.Enabled = false;
C3.Enabled = false;
C4.Enabled = false;
C5.Enabled = false;
}
//修改
private void button2_Click(object sender, EventArgs e)
{//修改状态,添加,删除不可用
button1.Enabled = false;
button3.Enabled = false;
button4.Enabled = true;
Is_add = "XG";
Is_on();
}
//加载的项目
void load()
{
Sql = "select * from C_Object";
Data1.DataSource = db.tables(Sql);
dt =db.tables("Select * from C_Width");
for (int i = 0; i < 8; i )
Data1.Columns[i].Width = int.Parse(dt.Rows[0][i].ToString());
// MessageBox.Show(dt.Rows[0][7].ToString());
}
private void Form1_Load(object sender, EventArgs e)
{
//skinEngine1.SkinFile = "MP10.ssk";
load();
Is_off();
}
//保存操作
private void button4_Click(object sender, EventArgs e)
{
if (Is_add != "")
{
T1.Text = T1.Text.Replace("'", "‘");
T1.Text = T1.Text.Replace("蔡陆飞", "蔡陆飞最棒");
if (C1.Checked) c1 = 1; if (C2.Checked) c2 = 1; if (C3.Checked) c3 = 1; if (C4.Checked) c4 = 1; if (C5.Checked) c5 = 1;
if (Is_add == "AD")//添加操作
{
Sql = "insert into C_Object(User_name,A,B,C,D,E)values('" T1.Text.Trim() "'," c1 "," c2 "," c3 "," c4 "," c5 ")";
// Sql = "Insert Into C_Object(User_name)values('" T1.Text.Trim() "')";
db.My_sql(Sql);
Is_add = ""; load();
}
else if (Is_add == "XG")//修改操作
{
Sql = "Update C_Object Set User_name='" T1.Text.Trim() "',A=" c1 ",B=" c2 ",C=" c3 ",D=" c4 ",E=" c5 " where ID=" ID;
db.My_sql(Sql);
Is_add = ""; load();
}
}
else
{ MessageBox.Show("没有任何操作!"); }
button1.Enabled = true;
button2.Enabled = true;
button3.Enabled = true;
c1 = 0; c2 = 0; c3 = 0; c4 = 0; c5 = 0;
button4.Enabled = false;
}
private void button5_Click(object sender, EventArgs e)
{
button1.Enabled = true;
button2.Enabled = true;
button3.Enabled = true;
button4.Enabled = true;
Is_add = "";
}
private void button3_Click(object sender, EventArgs e)
{
if (ID != -1)
{
if (MessageBox.Show("确定要删除吗?", "提示", MessageBoxButtons.YesNo, MessageBoxIcon.Question) == DialogResult.Yes)
{
Sql = "Delete from C_Object where ID=" ID;
db.My_sql(Sql);
load();
ID = -1;
}
}
else
MessageBox.Show("未选择任何项目!");
}
private void button6_Click(object sender, EventArgs e)
{
//if (ID == -1) { MessageBox.Show("没有选中任何项"); return; }
{
Sql = "delete from C_Object where ID in(";
for (int i = 0; i < Data1.Rows.Count; i )
{
if (Data1.Rows[i].Cells[0].Value != null) //判断该行的复选框是否存在
{
if (Data1.Rows[i].Cells[0].Value.ToString() == "True") //判断该复选框是否被选中
{
Sql = Data1.Rows[i].Cells[1].Value.ToString() ",";
}
}
}
Sql = Sql.Substring(0, Sql.Length - 1);
Sql = ")";
if (MessageBox.Show("确定要删除多条记录吗?", "提示", MessageBoxButtons.YesNo, MessageBoxIcon.Question) == DialogResult.Yes)
{
db.My_sql(Sql);
load();
}
}
}
private void button7_Click(object sender, EventArgs e)
{
for (int i = 0; i < 8; i )
{
Sql = "Update C_Width Set w" (i 1) "=" Data1.Columns[i].Width "";
db.My_sql(Sql);
}
}
private void All_ck_CheckedChanged(object sender, EventArgs e)
{
if (All_ck.Checked)
{
All_Checked();
}
else
{
C1.Checked = false;
C2.Checked = false;
C3.Checked = false;
C4.Checked = false;
C5.Checked = false;
}
}
}
}
标签： 权限
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