using (SqlConnection conn = new SqlConnection(mydll.db.connStr))
{
string sqlString = "select * from table "; / 创建一个适配器
SqlDataAdapter adapter = new SqlDataAdapter(sqlString, conn); DataSet DS = new DataSet();
adapter.Fill(DS, "result_data");
DataGridView dataGridView1=new DataGridView();
dataGridView1.DataSource = DS.Tables[0];
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}
{
string sqlString = "select * from table "; / 创建一个适配器
SqlDataAdapter adapter = new SqlDataAdapter(sqlString, conn); DataSet DS = new DataSet();
adapter.Fill(DS, "result_data");
DataGridView dataGridView1=new DataGridView();
dataGridView1.DataSource = DS.Tables[0];
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}
DataColumn dc = new DataColumn();
dc.DataPropertyName="数据列名";
dgv.Columns.Add(col);
dgv.DataSource = DS.Tables[0];
using (SqlConnection conn = new SqlConnection(mydll.db.connStr))
{ string sqlString = "select * from table"; // 创建一个适配器
SqlDataAdapter adapter = new SqlDataAdapter(sqlString, conn); // 创建DataSet,用于存储数据.
DataSet DS = new DataSet();
adapter.Fill(DS, "result_data"); DataGridView dataGridView1=new DataGridView(); dataGridView1.DataSource = DS.Tables[0];
//dataGridView1.DataBindings();
SaveFileDialog saveFileDialog = new SaveFileDialog();
saveFileDialog.Filter = "Execl files (*.xls)|*.xls";
saveFileDialog.FilterIndex = 0;
saveFileDialog.RestoreDirectory = true;
saveFileDialog.CreatePrompt = true; //提示是否创建(*****).xls文件
saveFileDialog.Title = "导出Excel文件到"; // saveFileDialog.ShowDialog();
if (saveFileDialog.ShowDialog() == DialogResult.OK)
{
Stream myStream;
myStream = saveFileDialog.OpenFile(); StreamWriter sw = new StreamWriter(myStream, System.Text.Encoding.GetEncoding("gb2312")); string str = "";
try
{
//写标题
for (int i = 0; i < dataGridView1.ColumnCount; i++)
{
if (i > 0)
{
str += "\t";
}
str += dataGridView1.Columns[i].HeaderText;
} sw.WriteLine(str);
//写内容
for (int j = 0; j < dataGridView1.Rows.Count - 1; j++)
{
string tempStr = "";
for (int k = 0; k < dataGridView1.Columns.Count; k++)
{
if (k > 0)
{
tempStr += "\t";
}
tempStr += dataGridView1.Rows[j].Cells[k].Value.ToString();
}
sw.WriteLine(tempStr);
} MessageBox.Show("导出数据成功");
sw.Close();
myStream.Close(); }
catch (Exception ee)
{
MessageBox.Show(ee.Message);
return;
}
finally
{
sw.Close();
myStream.Close();
}
}
adapter.Dispose();
DS.Dispose();
}
要跑DataGridView 上去绕一圈?很多控件没有显示的时候,是不会刷新数据的。
我最终目的就是导出到excelDS.Tables[0] 怎么直接导出到excel? 你有没有稳定好用的源代码例子,要你自己测试过可以的才行哦,不要随便粘贴一段给我 :)
我也做过很多EXCEL导出,不过我一般用NPOI
http://npoi.codeplex.com/releases/view/38113感觉不错,开源的,还有很多examples。控制性很强。
通过dataGridView1导出是把数据当做数据流输出,效率很高;直接导出datatable也是可以的,效率会比较低