要在报表查看器中使用存储过程,需要完成以下步骤:
CREATE PROCEDURE GetReportData
AS
BEGIN
-- Your SQL code to fetch report data
SELECT * FROM YourTableName;
END
using System;
using System.Data;
using System.Data.SqlClient;
public class ReportViewer
{
public void ShowReport()
{
// Connect to the database
string connectionString = "YourConnectionString";
SqlConnection connection = new SqlConnection(connectionString);
try
{
// Open the connection
connection.Open();
// Create a command object to call the stored procedure
SqlCommand command = new SqlCommand("GetReportData", connection);
command.CommandType = CommandType.StoredProcedure;
// Create a data adapter to fill the dataset
SqlDataAdapter adapter = new SqlDataAdapter(command);
DataSet dataSet = new DataSet();
// Fill the dataset with the stored procedure results
adapter.Fill(dataSet);
// Display the report using the dataset
// Your code to display the report
// Close the connection
connection.Close();
}
catch (Exception ex)
{
// Handle any errors
Console.WriteLine("Error: " + ex.Message);
}
finally
{
// Close the connection if it is still open
if (connection.State == ConnectionState.Open)
{
connection.Close();
}
}
}
}
请注意,上述代码仅供参考,并假设你使用的是SQL Server数据库。你需要根据自己的数据库和报表查看器进行相应的调整。