private void Btn_cn2_Click(object sender, EventArgs e)
{
if (string.IsNullOrEmpty(txt_conn2.Text))
{
MessageBox.Show("连接字符串不能为空", "输入异常", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
else
{
try
{
string openInfo = SqlHelper_2.Open(txt_conn2.Text);
MessageBox.Show(openInfo == "success" ? "连接成功" : openInfo, "连接提示", MessageBoxButtons.OK, MessageBoxIcon.None);
}
catch (Exception es)
{
MessageBox.Show("连接失败，" + es.Message, "连接提示", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
}
void ExportAll(object filePath)
{
this.Invoke(new Action(() => { }));
lock (obj)
{
DataTable tables_1 = SqlHelper_1.GetTables();
DataTable tables_2 = SqlHelper_2.GetTables();
OrderedEnumerableRowCollection <DataRow> dataRows_1 = tables_1.AsEnumerable().OrderBy(a => a.Field <string>("name"));
OrderedEnumerableRowCollection <DataRow> dataRows_2 = tables_2.AsEnumerable().OrderBy(a => a.Field <string>("name"));
//创建Excel文件的对象
IWorkbook book = new NPOI.HSSF.UserModel.HSSFWorkbook();
#region 设置表头样式
//创建样式对象
ICellStyle style = book.CreateCellStyle();
//创建一个字体样式对象
IFont font = book.CreateFont();
font.Boldweight = short.MaxValue;
font.FontHeightInPoints = 16;
//水平居中
style.Alignment = NPOI.SS.UserModel.HorizontalAlignment.Center;
//垂直居中
style.Alignment = NPOI.SS.UserModel.HorizontalAlignment.CenterSelection;
//将字体样式赋给样式对象
style.SetFont(font);
#endregion
#region 设置内容样式
//创建样式对象
ICellStyle style2 = book.CreateCellStyle();
//水平居中
style2.Alignment = NPOI.SS.UserModel.HorizontalAlignment.Center;
//垂直居中
style2.Alignment = NPOI.SS.UserModel.HorizontalAlignment.CenterSelection;
#endregion
foreach (DataRow row in dataRows_1)
{
string tablename = row["name"].ToString().Trim();
DataTable tableInfo_1 = SqlHelper_1.GetTableInfo(tablename);
DataTable tableInfo_2 = SqlHelper_2.GetTableInfo(tablename);
IEnumerable <DataRow> query = tableInfo_1.AsEnumerable().Except(tableInfo_2.AsEnumerable(), DataRowComparer.Default);
if (query.Count() > 0)
{
DataTable changesTable = query.CopyToDataTable();
//添加一个sheet
NPOI.SS.UserModel.ISheet sheet1 = book.CreateSheet(tablename);
//给sheet1添加第一行的头部标题
NPOI.SS.UserModel.IRow row1 = sheet1.CreateRow(0);
int c = 0;
foreach (DataColumn item in changesTable.Columns)
{
//设置宽度
sheet1.SetColumnWidth(c, 40 * 150);
ICell cell = row1.CreateCell(c);
cell.SetCellValue(item.Caption);
cell.CellStyle = style;
c++;
}
//将数据逐步写入sheet1各个行
int k = 0;
foreach (DataRow item in changesTable.Rows)
{
NPOI.SS.UserModel.IRow rowtemp = sheet1.CreateRow(k + 1);
for (int i = 0; i < changesTable.Columns.Count; i++)
{
ICell cell = rowtemp.CreateCell(i);
cell.SetCellValue(item[i].ToString());
cell.CellStyle = style2;
}
k++;
}
}
}
//写入文件
FileStream xlsfile = new FileStream(filePath.ToString(), FileMode.Create);
book.Write(xlsfile);
xlsfile.Dispose();
this.Invoke(new Action(() => { MessageBox.Show("导出成功，文件存放于桌面", "导出提示", MessageBoxButtons.OK, MessageBoxIcon.None); }));
isFinish = true;
}
}
