private Business.Class GetClassInstance()
{
Business.Class objClass = null;
if (objClass == null)
{
objClass = new Business.Class();
}
return(objClass);
}
private void BindData()
{
var objClass = new Business.Class();
try
{
dgvClass.DataSource = objClass.GetAll();
}
catch
{
}
finally
{
objClass = null;
}
}
private void dgvClass_CellClick(object sender, DataGridViewCellEventArgs e)
{
try
{
if (dgvClass.Columns[e.ColumnIndex].Name == "ClassEdit" && e.RowIndex >= 0)
{
txtClassName.Text = Convert.ToString(dgvClass.CurrentRow.Cells[3].Value);
ClassID = int.Parse(dgvClass.CurrentRow.Cells[2].Value.ToString());
IsEditMode = true;
}
if (dgvClass.Columns[e.ColumnIndex].Name == "ClassDelete" && e.RowIndex >= 0)
{
var ClassName = Convert.ToString(dgvClass.CurrentRow.Cells[3].Value);
ClassID = int.Parse(dgvClass.CurrentRow.Cells[2].Value.ToString());
if (MessageBox.Show(string.Concat("您确认删除 - ", ClassName, " - 吗?"), "提示", MessageBoxButtons.YesNo, MessageBoxIcon.Question) == DialogResult.Yes)
{
var objClass = new Business.Class();
try
{
if (objClass.Delete(ClassID))
{
IsEditMode = false;
txtClassName.Text = string.Empty;
txtClassName.Focus();
BindData();
}
}
catch
{
}
finally
{
objClass = null;
}
}
}
}
catch
{
}
finally {
}
}
private void btnSave_Click(object sender, EventArgs e)
{
if (string.IsNullOrWhiteSpace(txtClassName.Text.Trim()))
{
MessageBox.Show("请输入班级名称!", "提示", MessageBoxButtons.OK, MessageBoxIcon.Error);
txtClassName.Focus();
return;
}
var Name = txtClassName.Text.Trim();
var objClass = new Business.Class();
try
{
if (!IsEditMode)
{
if (objClass.Insert(Name))
{
txtClassName.Text = string.Empty;
txtClassName.Focus();
lblMessage.Text = string.Concat(Name, " - 班创建成功!");
BindData();
}
}
else
{
if (objClass.Update(ClassID, Name))
{
txtClassName.Text = string.Empty;
txtClassName.Focus();
lblMessage.Text = string.Concat(Name, " - 班修改成功!");
BindData();
IsEditMode = false;
}
}
}
catch
{
MessageBox.Show("抱歉创建遇到错误请重试!", "提示", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
finally {
objClass = null;
}
}
