[英]how to Upload a excel file to sql database table using c# windows form application
I want to upload a excel file through windows form application in c# and want to import the data to database ( Mysql server). 我想通过c#中的windows表单应用程序上传excel文件,并希望将数据导入数据库(Mysql服务器)。 how can i do that???
我怎样才能做到这一点??? I have created a form which requires me to upload a excel file into the mysql database .
我创建了一个表单,要求我将excel文件上传到mysql数据库。 its an bulk insert data to database table.
它是一个批量插入数据到数据库表。
My Excel File Contain columns like userid,password,first_name,last_name,user_group AND MySql Database table(aster_users) Contain many columns like userid,password,first_name,last_name,user_group,queue,active,created_date,created_by,role .. 我的Excel文件包含userid,password,first_name,last_name,user_group和MySql Database表(aster_users)等列,包含许多列,如userid,password,first_name,last_name,user_group,queue,active,created_date,created_by,role ..
i need to upload that excel file to my database and other columns will get empty or null that's not a matter. 我需要将该excel文件上传到我的数据库,其他列将变为空或null,这不是问题。
Here is My c# Code: 这是我的c#代码:
using MySql.Data.MySqlClient;
using System;
using System.Data.SqlClient;
using System.Windows.Forms;
namespace UploadFileToDatabase
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
String MyConString = "SERVER=******;" +
"DATABASE=dbs;" +
"UID=root;" +
"PASSWORD=pwsd;" + "Convert Zero Datetime = True";
private void BtnSelectFile_Click(object sender, EventArgs e)
{
OpenFileDialog dlg = new OpenFileDialog();
dlg.Filter = "Text files | *.csv";
if (dlg.ShowDialog() == DialogResult.OK)
{
string fileName;
fileName = dlg.FileName;
txtfilepath.Text = fileName;
}
}
private void btnUpload_Click(object sender, EventArgs e)
{
string connectionString = @"Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + txtfileparth.Text + ";Extended Properties=\"Excel 12.0;HDR=YES;\"";
using (OleDbConnection connection =
new OleDbConnection(connectionString))
{
OleDbCommand command = new OleDbCommand
("Select * FROM [Sheet1$]", connection);
connection.Open();
using (DbDataReader dr = command.ExecuteReader())
{
string sqlConnectionString = MyConString;
using (SqlBulkCopy bulkCopy = new SqlBulkCopy(sqlConnectionString))
{
bulkCopy.ColumnMappings.Add("[userid]", "userid");
bulkCopy.ColumnMappings.Add("password", "password");
bulkCopy.ColumnMappings.Add("first_name", "first_name");
bulkCopy.ColumnMappings.Add("last_name", "last_name");
bulkCopy.ColumnMappings.Add("user_group", "user_group");
bulkCopy.DestinationTableName = "aster_users";
bulkCopy.WriteToServer(dr);
MessageBox.Show("Upload Successfull!");
}
}
}
}
Here is how i tried.i got an error message like this 这是我试过的方式。我得到了这样的错误信息
Additional information: External table is not in the expected format.
附加信息:外部表格不是预期的格式。
in this line connection.Open(); 在这行连接.Open(); .
。 How can this be Done?
如何才能做到这一点?
using System;
using System.Data;
using System.Data.OleDb;
using System.Data.SqlClient;
using System.Windows.Forms;
namespace IMPORT
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
String MyConString = "SERVER=******;" +
"DATABASE=db;" +
"UID=root;" +
"PASSWORD=pws;";
private void btnSelectFile_Click(object sender, EventArgs e)
{
OpenFileDialog openfiledialog1 = new OpenFileDialog();
openfiledialog1.ShowDialog();
openfiledialog1.Filter = "allfiles|*.xls";
txtfilepath.Text = openfiledialog1.FileName;
}
private void btnUpload_Click(object sender, EventArgs e)
{
string path = txtfilepath.Text;
string ConnString = @"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + path + ";Extended Properties = Excel 8.0";
DataTable Data = new DataTable();
using (OleDbConnection conn =new OleDbConnection(ConnString))
{
conn.Open();
OleDbCommand cmd = new OleDbCommand(@"SELECT * FROM [dataGridView1_Data$]", conn);
OleDbDataAdapter adapter = new OleDbDataAdapter(cmd);
adapter.Fill(Data);
conn.Close();
}
string ConnStr = MyConString;
using (SqlBulkCopy bulkCopy = new SqlBulkCopy(ConnStr))
{
bulkCopy.DestinationTableName = "TABLE NAME";
bulkCopy.ColumnMappings.Add("userid", "userid");
bulkCopy.ColumnMappings.Add("password", "password");
bulkCopy.ColumnMappings.Add("first_name", "first_name");
bulkCopy.ColumnMappings.Add("last_name", "last_name");
bulkCopy.ColumnMappings.Add("user_group", "user_group");
bulkCopy.WriteToServer(Data);
MessageBox.Show("UPLOAD SUCCESSFULLY");
}
}
}
An example found http://technico.qnownow.com/bulk-copy-data-from-excel-to-destination-db-using-sql-bulk-copy/ . 一个例子是 http://technico.qnownow.com/bulk-copy-data-from-excel-to-destination-db-using-sql-bulk-copy/ 。 And ERROR: Additional information: External table is not in the expected format
和 错误:附加信息:外部表格不是预期的格式
There is an awesome link that shows how to upload to c# datatable from excel...in case the link dies I am sharing the procedure.... 有一个很棒的链接 ,显示如何从excel上传到c#datatable ...如果链接死亡我正在共享程序....
The excel Connection Strings for diff versions: diff版本的Excel连接字符串:
private string Excel03ConString = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source={0};Extended Properties='Excel 8.0;HDR=YES'";
private string Excel07ConString = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source={0};Extended Properties='Excel 8.0;HDR=YES'";
The File select event: 文件选择事件:
private void BtnSelectFile_Click(object sender, EventArgs e)
{
DataTable dt;
OpenFileDialog dlg = new OpenFileDialog();
dlg.Filter = "Excel files | *.xls";
if (dlg.ShowDialog() == DialogResult.OK)
{
string filePath = dlg.FileName;
string extension = Path.GetExtension(filePath);
string conStr, sheetName;
conStr = string.Empty;
switch (extension)
{
case ".xls": //Excel 97-03
conStr = string.Format(Excel03ConString, filePath);
break;
case ".xlsx": //Excel 07 to later
conStr = string.Format(Excel07ConString, filePath);
break;
}
//Read Data from the Sheet.
using (OleDbConnection con = new OleDbConnection(conStr))
{
using (OleDbCommand cmd = new OleDbCommand())
{
using (OleDbDataAdapter oda = new OleDbDataAdapter())
{
dt = new DataTable();
cmd.CommandText = "SELECT * From [Sheet1$]";
cmd.Connection = con;
con.Open();
oda.SelectCommand = cmd;
oda.Fill(dt);
con.Close();
}
}
}
//Save the datatable to Database
string sqlConnectionString = MyConString;
if(dt != null)
{
using (SqlBulkCopy bulkCopy = new SqlBulkCopy(sqlConnectionString))
{
bulkCopy.ColumnMappings.Add("[userid]", "userid");
bulkCopy.ColumnMappings.Add("password", "password");
bulkCopy.ColumnMappings.Add("first_name", "first_name");
bulkCopy.ColumnMappings.Add("last_name", "last_name");
bulkCopy.ColumnMappings.Add("user_group", "user_group");
bulkCopy.DestinationTableName = "aster_users";
bulkCopy.WriteToServer(dt);
MessageBox.Show("Upload Successfull!");
}
}
}
}
Then you can just save the datatable to mySql database which I hope you know how to do...If you can't then comment I'll try my best to help you. 然后你可以将数据表保存到mySql数据库,我希望你知道该怎么做......如果你不能再评论我会尽力帮助你。 Thank You
谢谢
Hope this helps.... 希望这可以帮助....
ஆர்த்தி, ஆர்த்தி,
Use the Below Connection String Format 使用以下连接字符串格式
string File = sResponsedExcelFilePath;
string result = Path.GetFileName(sFilePath);
ExcelReaderConnString = string.Format("Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + File +"\\"+ result + ";Extended Properties=Excel 12.0;");
Hope this works for you. 希望这对你有用。
using System;
using System.Data;
using System.Data.OleDb;
using System.Data.SqlClient;
using System.Windows.Forms;
namespace IMPORT
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
String MyConString = "SERVER=******;" +
"DATABASE=db;" +
"UID=root;" +
"PASSWORD=pws;";
private void btnSelectFile_Click(object sender, EventArgs e)
{
OpenFileDialog openfiledialog1 = new OpenFileDialog();
openfiledialog1.ShowDialog();
openfiledialog1.Filter = "allfiles|*.xls";
txtfilepath.Text = openfiledialog1.FileName;
}
private void btnUpload_Click(object sender, EventArgs e)
{
string path = txtfilepath.Text;
string ConnString = @"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + path + ";Extended Properties = Excel 8.0";
DataTable Data = new DataTable();
using (OleDbConnection conn =new OleDbConnection(ConnString))
{
conn.Open();
OleDbCommand cmd = new OleDbCommand(@"SELECT * FROM [dataGridView1_Data$]", conn);
OleDbDataAdapter adapter = new OleDbDataAdapter(cmd);
adapter.Fill(Data);
conn.Close();
}
string ConnStr = MyConString;
using (SqlBulkCopy bulkCopy = new SqlBulkCopy(ConnStr))
{
bulkCopy.DestinationTableName = "TABLE NAME";
bulkCopy.ColumnMappings.Add("userid", "userid");
bulkCopy.ColumnMappings.Add("password", "password");
bulkCopy.ColumnMappings.Add("first_name", "first_name");
bulkCopy.ColumnMappings.Add("last_name", "last_name");
bulkCopy.ColumnMappings.Add("user_group", "user_group");
bulkCopy.WriteToServer(Data);
MessageBox.Show("UPLOAD SUCCESSFULLY");
}
}
}
I had huge problems trying to use either/both Jet and ACE.OLEDB providers. 尝试使用Jet和ACE.OLEDB提供程序时,我遇到了很大的问题。 You could try this o/s library ClosedXML, which will import xlsx files: 'Microsoft.ACE.OLEDB.12.0' provider is not registered on the local machine
您可以尝试使用这个o / s库ClosedXML,它将导入xlsx文件: 'Microsoft.ACE.OLEDB.12.0'提供程序未在本地计算机上注册
Available via Nuget. 可通过Nuget获得。 It has its own wiki: https://github.com/ClosedXML/ClosedXML/wiki
它有自己的wiki: https : //github.com/ClosedXML/ClosedXML/wiki
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