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我在Visual Studio 2010中工作,我试图通过网页将文档上载到访问数据库。当我运行我的代码时,我没有收到任何错误,但没有写入数据库。这是我的点击代码,以显示我认为它应该做的事情。使用c#将文档上传到Access数据库
protected void btnUpload_Click(object sender, EventArgs e)
{
if (FileUpload1.HasFile)
{
string fileExtension = Path.GetExtension(FileUpload1.FileName);
if (fileExtension.ToLower() != ".doc" || fileExtension.ToLower() != ".docx" || fileExtension.ToLower() != ".pdf")
{
lblInfo.Text = "Only .doc, .docx, or .pdf files are allowed.";
lblInfo.ForeColor = System.Drawing.Color.Red;
}
else
{
int fileSize = FileUpload1.PostedFile.ContentLength;
if (fileSize > 2097152)
{
lblInfo.Text = "Maximum file size of 2 MB exceeded.";
lblInfo.ForeColor = System.Drawing.Color.Red;
}
else
{
OleDbCommand update = new OleDbCommand("Update STAFF SET Resume = @Resume WHERE [email protected]", DBConnection);
update.Parameters.Add("@Resume", OleDbType.LongVarBinary).Value = FileUpload1.FileContent;
update.Parameters.Add("@StaffID", OleDbType.Integer).Value = txtStaffID.Text;
lblInfo.Text = "File Uploaded";
lblInfo.ForeColor = System.Drawing.Color.Green;
}
}
}
else
{
lblInfo.Text = "Please select a file to upload";
lblInfo.ForeColor = System.Drawing.Color.Red;
}
}
如果您可以提供任何意见或建议,将是伟大的。谢谢。我还会显示整个代码,以防万一它是数据库连接的问题。
public partial class Staff : System.Web.UI.Page
{
OleDbConnection DBConnection = new OleDbConnection();
OleDbDataAdapter DataAdapter;
DataTable LocalDataTable = new DataTable();
private void ConnectToDatabase()
{
DBConnection.ConnectionString = @"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:\CIS470_TPS_System\CIS470_TPS_System\CIS470_TPS_System\App_Data\TpsSystem_DB.mdb";
DBConnection.Open();
DataAdapter = new OleDbDataAdapter("Select * From STAFF", DBConnection);
DataAdapter.Fill(LocalDataTable);
}
private void Page_Load(object sender, EventArgs e)
{
ConnectToDatabase();
}
protected void AccessDataSource1_Selecting(object sender, SqlDataSourceSelectingEventArgs e)
{
}
protected void GridView1_SelectedIndexChanged(object sender, EventArgs e)
{
string requestId = GridView1.SelectedRow.Cells[1].Text;
txtSelectedStaff.Text = requestId; //this control holds the selected value
}
protected void DetailsView1_PageIndexChanging(object sender, DetailsViewPageEventArgs e)
{
}
此次荣获” t工作,因为你刚刚使用OleDbCommand,但没有执行它。尝试在“lblInfo.Text =”File Uploaded“;”之前使用update.ExecuteNonQuery()行,然后检查。 ;) – 2014-10-11 06:02:01
@HiteshMistry感谢您的建议,但之后,我按下上传时出现错误。它说InvalidCastException由用户代码处理。无法将参数值从HttpInputStream转换为字节[]。 – 2014-10-11 06:29:41
嘿道格拉斯,只需写FileUpload1.FileBytes而不是FileUpload1.FileContent,试着让我知道它是否解决了这个问题。我无法做到这一点,因为我没有安装在我的机器上。 :| – 2014-10-11 09:18:57