在asp.net中向excel查询传递参数
本文关键字:参数 查询 excel asp net 中向 | 更新日期: 2023-09-27 18:19:26
我想使用OleDB读取excel文件,但当在查询中插入参数时,我有以下OleDB异常:
没有给出一个或多个所需参数的值
代码
string conn = String.Format(@"Provider=Microsoft.ACE.OLEDB.12.0;Data Source={0};Extended Properties=""Excel 12.0 Xml;HDR=YES"";", opFileImport.FileName);
string sql = "Select CODICE_FISCALE From [Parte_4$] ";
sql += "where CODICE_FISCALE = ?";
using (OleDbDataAdapter dataAdapter = new OleDbDataAdapter())
{
dataAdapter.SelectCommand = new OleDbCommand(sql, excelConn);
dataAdapter.SelectCommand.Parameters.Add(new OleDbParameter("Param1", strCodFisc));
DataTable dt = new DataTable();
dataAdapter.Fill(dt);
}
参数名称应为CODICE_FISCALE,而不是Param1。试试这个代码
var conn = String.Format(@"Provider=Microsoft.ACE.OLEDB.12.0;Data Source={0};Extended Properties=""Excel 12.0 Xml;HDR=YES"";", opFileImport.FileName);
string sql = "Select CODICE_FISCALE From [Parte_4$] ";
sql += "where CODICE_FISCALE = ?";
DataTable dt = new DataTable();
using (OleDbConnection excelConn = new OleDbConnection(conn))
{
using (OleDbDataAdapter dataAdapter = new OleDbDataAdapter())
{
dataAdapter.SelectCommand = new OleDbCommand(sql, excelConn);
dataAdapter.SelectCommand.Parameters.Add(new OleDbParameter("CODICE_FISCALE", strCodFisc));
dataAdapter.Fill(dt);
}
}