C#422-研究生管理信息系统,OleDbDataReader rd;
string sql;
sql="select MName from majorinfo";
oleCommand1.CommandText=sql;
oleConnection1.Open();
rd=oleCommand1.ExecuteReader();
while (rd.Read())
{
TreeNode node=new TreeNode();
node.Text=rd.GetString(0).ToString();
treeView1.Nodes.Add(node);
}
rd.Close();
oleConnection1.Close();
2023-12-16 22:18:57
5.13MB
1
C#421-酒店管理系统(1),if(childFrm.WindowState == FormWindowState.Minimized)
childFrm.WindowState = FormWindowState.Normal;
childFrm.Activate();
return true;
2023-12-16 22:17:25
4.26MB
1
在visual studio环境下开发。使用c#语言。程序中使用了线程，代理。实现了客户端和服务器的通信。只是个小例子。
2023-12-16 05:04:47
68KB
1
仿微软，简单功能齐全的notepad记事本程序和源码，提供给初学者交流和学习。
对search方法略作修改，查不到字符时返回起始位置；
public void button1_Click(object sender, EventArgs e)
{
if (textBox1.Text.Length > 0)
{
str = textBox1.Text;
fm.searchStr = textBox1.Text;
fm.matchCase = checkBox1.Checked;
fm.upCheck = radioButton1.Checked;
}
else
{
str = fm.searchStr;
checkBox1.Checked = fm.matchCase;
radioButton1.Checked = fm.upCheck;
}
if (str == null)
{
MessageBox.Show("找不到" + str, "记事本");
}
else
{
if (checkBox1.Checked)
{
if (radioButton2.Checked)
{
select += fm.richTextBox1.SelectedText.Length;
marker = select;
select = fm.richTextBox1.Find(str, select, RichTextBoxFinds.MatchCase);
if (select == -1 ||select=marker)
{
marker = start;
select = start;
fm.richTextBox1.SelectionStart = start;
if (select != 0)
fm.richTextBox1.Find(str, 0, select, RichTextBoxFinds.Reverse | RichTextBoxFinds.MatchCase);
MessageBox.Show("找不到" + str, "记事本");
start = marker;
}
}
}
else
{
if (radioButton2.Checked)
{
select+=fm.richTextBox1.SelectedText.Length;
marker = select;
select = fm.richTextBox1.Find(str, select, RichTextBoxFinds.None);
if (select==-1||select=marker)
{
marker = start;
select = start;
fm.richTextBox1.SelectionStart = start;
if (select != 0)
fm.richTextBox1.Find(str, 0, select, RichTextBoxFinds.Reverse | RichTextBoxFinds.None);
MessageBox.Show("找不到" + str, "记事本");
start = marker;
}
}
}
}
}
2023-12-16 05:04:09
164KB
1