c#将数据库中数据一键导出
时间: 2024-04-13 07:28:15 浏览: 19
您可以使用C#中的ADO.NET来实现将数据库中的数据一键导出。下面是一个示例代码,用于将数据库中的数据导出到CSV文件:
```csharp
using System;
using System.Data;
using System.Data.SqlClient;
using System.IO;
public class DatabaseExporter
{
private string connectionString;
public DatabaseExporter(string connectionString)
{
this.connectionString = connectionString;
}
public void ExportDataToCsv(string tableName, string csvFilePath)
{
string query = $"SELECT * FROM {tableName}";
using (SqlConnection connection = new SqlConnection(connectionString))
{
using (SqlCommand command = new SqlCommand(query, connection))
{
connection.Open();
using (SqlDataReader reader = command.ExecuteReader())
{
using (StreamWriter writer = new StreamWriter(csvFilePath))
{
for (int i = 0; i < reader.FieldCount; i++)
{
writer.Write($"{reader.GetName(i)},");
}
writer.WriteLine();
while (reader.Read())
{
for (int i = 0; i < reader.FieldCount; i++)
{
writer.Write($"{reader[i]},");
}
writer.WriteLine();
}
}
}
}
}
}
}
```
使用示例:
```csharp
string connectionString = "YourConnectionString";
string tableName = "YourTableName";
string csvFilePath = "YourCsvFilePath.csv";
DatabaseExporter exporter = new DatabaseExporter(connectionString);
exporter.ExportDataToCsv(tableName, csvFilePath);
```
请确保将"YourConnectionString"替换为您的数据库连接字符串,"YourTableName"替换为您要导出数据的表名,"YourCsvFilePath.csv"替换为要保存CSV文件的路径。
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