1
在对数据进行更多的读取和研究之后，我已经基于MSDN站点重新编写了一个数据集的代码;然而，我正陷入困境。我相信我已经在类级别中声明了该数据集;然而，每当我试图把该数据集与数据表未找到错误
DataRow[] drRow = tblEmployee.Select("EmployeeKey = " + TextBox12.Text)
我收到错误：
- “tblEmployees”并不在当前的背景下
- 名称“TextBox12存在名称'不存在在当前的情况下
我想能够decl它是在班级，所以我可以从表格中的任何地方打电话给它。
我已经通读了MSDN网站上的课程级别，说实话，我认为这只是让我更加困惑。
基本上就是我想要发生的是数据集按照字母顺序按名字提供员工列表，然后当用户从下拉框中选择员工时，应选择员工ID并将其显示在textBox12中，然后执行tblEmplpoyees的搜索以查找其余数据以显示给员工，例如代码中的//注释中定义的字段。
有人可以帮助我这个，这里是我的代码大气压：
namespace Tempus.Menus
{
public partial class Employees : Form
{
public class myData
{
DataSet[]drRow = tblEmployees.Select("EmployeeKey = " + TextBox12.Text);;
}
public Employees()
{
InitializeComponent();
//Connect to database for Employees Table Headers
SqlConnection myConnection = new SqlConnection(@"Server=server\CHCTEMPUS;Integrated Security=true;" +
"user id=userID;password=password;" +
"Trusted_Connection=yes;" +
"Database=Database;" +
"connection timeout=30");
SqlDataAdapter daEmployees
= new SqlDataAdapter("Select *, Lname +', '+ Fname as LastFirst, Fname +' '+ Lname as FirstLast FROM Employees WHERE Lname IS NOT NULL AND Fname IS NOT NULL", myConnection);
DataSet dsEmployees = new DataSet("Employees");
daEmployees.FillSchema(dsEmployees, SchemaType.Source, "Employees");
daEmployees.Fill(dsEmployees, "Employees");
DataTable tblEmployees;
tblEmployees = dsEmployees.Tables["Employees"];
comboBox1.DisplayMember = "FirstLast";
comboBox1.ValueMember = "employeeNumber";
comboBox1.DataSource = tblEmployees;
try
{ }
catch (Exception e)
{
MessageBox.Show(e.ToString());
}
finally
{
if (myConnection != null)
{
myConnection.Dispose();
}
}
comboBox1.SelectedIndexChanged += comboBox1_SelectedIndexChanged;
comboBox2.SelectedIndexChanged += comboBox2_SelectedIndexChanged;
}
private void comboBox1_SelectedIndexChanged(object sender, EventArgs e)
{
if (comboBox1.SelectedIndex != -1)
{
textBox1.Text = string.Empty;
}
{
textBox12.Text = comboBox1.SelectedValue.ToString();
}
}
private void comboBox2_SelectedIndexChanged(object sender, EventArgs e)
{
if (comboBox2.SelectedIndex == -1)
{
textBox1.Text = string.Empty;
}
else
{
textBox1.Text = comboBox2.SelectedItem.ToString();
}
}
private void Employees_Load(object sender, EventArgs e)
{
}
private void label1_Click(object sender, EventArgs e)
{
}
private void textBox1_TextChanged_1(object sender, EventArgs e)
{
//Last Name
}
private void textBox2_TextChanged(object sender, EventArgs e)
{
//First Name
}
private void textBox3_TextChanged(object sender, EventArgs e)
{
//Middle Name
}
private void textBox4_TextChanged(object sender, EventArgs e)
{
//Hire Date
}
private void textBox5_TextChanged(object sender, EventArgs e)
{
//Term Date
}
private void textBox6_TextChanged(object sender, EventArgs e)
{
//Company
}
private void textBox7_TextChanged(object sender, EventArgs e)
{
//Notes
}
private void textBox8_TextChanged(object sender, EventArgs e)
{
//PTO
}
private void textBox9_TextChanged(object sender, EventArgs e)
{
//SNP
}
private void textBox10_TextChanged(object sender, EventArgs e)
{
//Credentials
}
private void textBox11_TextChanged(object sender, EventArgs e)
{
//Employee Full Name (First Last)
}
private void textBox12_TextChanged(object sender, EventArgs e)
{
//Employee ID
}
private void textBox13_TextChanged(object sender, EventArgs e)
{
//Branch
}
private void checkBox1_CheckedChanged(object sender, EventArgs e)
{
if (checkBox1.Checked)
{
// logic here for if the box has now been checked
}
else
{
// what to do if the box has been unchecked
}
}
private void button1_Click(object sender, EventArgs e)
{
Main myNewForm = new Main();
myNewForm.Show();
this.Close();
}
private void button2_Click(object sender, EventArgs e)
{
Reports myNewForm = new Reports();
myNewForm.Show();
this.Close();
}
}
}
你能粘贴代码吗？ – 2012-07-24 21:00:17
对不起，我以为我已经从Namespace中选择了全部。我很抱歉。 – 2012-07-24 21:09:32
向我们展示了更多的代码，尤其是调用和引发错误的上下文 – Les 2012-07-24 21:10:11