C# - Can't Read Excel File After Creating It Using File.WriteAllText() Function
May 27, 2010
I have created an excel sheet from datatable using function. I want to read the excel sheet programatically using the below connectionstring. This string works fine for all other excel sheets but not for the one i created using the function. I guess it is because of excel version problem.
OleDbConnection conn= new OleDbConnection("Data Source='" + path +"';provider=Microsoft.Jet.OLEDB.4.0;Extended Properties=Excel 8.0;";);
which i can create an excel sheet such that it is readable again using above query. I cannot use Microsoft InterOp library as it is not supported by my host. I have even changed different encoding formats. Still it doesnt work
[code]....
View 1 Replies
Similar Messages:
Apr 29, 2010
I have the following code that creates a new Excel file in my C# code behind. When I attempt to save the file I would like the user to select the location of the save.
In Method #1, I can save the file my using the workbook SaveCopyAs without prompting the user for a location. This saves one file to the C:Temp directory.
Method #2 will save the file in my UsersDocuments folder, then prompt the user to select the location and save a second copy. How can I eliminate the first copy from saving in the UsersDocuments folder?
Excel.Application oXL;
Excel._Workbook oWB;
Excel._Worksheet oSheet;
Excel.Range oRng;....
View 3 Replies
Oct 13, 2010
I a now Porting a data from Uploaded Excel File to database. In that, I need to check "Sheet name" Of that Excel file Whether it is Sheet1 or Sheet2 or something else...
how to Check/Read Excel Sheet name at runtime..
View 1 Replies
Sep 23, 2010
I would like to know your libraries recommendations to read and write Excel applications on ASP .NET website. I have tried GemBox and NPOI, because they don't required Excel to be installed on the server, but they have some limitations on handling Excel files that are marked to read only.
View 6 Replies
Nov 11, 2010
i can't read picture from file excel in code asp.net
View 2 Replies
Aug 21, 2010
I have a web app where user uploads a file.ile is saved in server locally and I want to read some data from it.Currently my development server has office 2003.So do I need office 2007 in order to be able to read an excel from office 2007 ?
Microsoft.Office.Interop.Excel.Application excelApp = new Microsoft.Office.Interop.Excel.Application();
Microsoft.Office.Interop.Excel.Workbook wrkBook; // = new Microsoft.Office.Interop.Excel.Workbook();
View 3 Replies
Apr 2, 2011
using below code im reading excel sheet data by specifying the sheet name as [Project1$] but, how do i call the excel sheet without specifying the sheet name so, that it will ready any files.
string strFileName = FileUpload1.PostedFile.FileName;
string connectionString = "Provider=Microsoft.Jet.OLEDB.4.0;" + "Data Source=" + strFileName + ";" + "Extended Properties=Excel 8.0;";
OleDbConnection objConn = new OleDbConnection(connectionString);
objConn.Open();
String strConString = "SELECT * FROM [Project1$]";
View 5 Replies
Mar 16, 2010
I want create my output in excel file. But in server i cannot install office, its too costly i am developing it with vishual studio2005 with vb. so anybody can give the solution for this.
View 2 Replies
Nov 10, 2010
In my asp.net page, I am creating excel file using Office.Interop and saving. The application works correctly in my local. When I am deploying in Win 2003 server I am getting below Error. I don't have excel installed in server.
Retrieving the COM class factory for component with CLSID {00024500-0000-0000-C000-000000000046} failed due to the following error: 80070005
View 12 Replies
Feb 24, 2011
i am getting following error while creating the excel file
System.UnauthorizedAccessException: Retrieving the COM class factory for component with CLSID {00024500-0000-0000-C000-000000000046} failed due to the following error: 80070005 Access is denied. (Exception from HRESULT: 0x80070005(E_ACCESSDENIED)). at QA.CreateExcel.createDoc() in e:~~CreateExcel.cs:line 33
i am using this code.
private Office.Excel.Application app =new Office.Excel.Application();
View 2 Replies
Nov 21, 2010
i have an asp.net application
c# code
i have adtabase in access and i craete adatset from it
i want to create excell file
View 2 Replies
Feb 26, 2010
I want to read and write excel file . it can do with oledb , there is a limitation maximunm characters < 255 solution is mono data type , now create table become second sheet (when open excel it is shown as hidden.)
View 2 Replies
Jan 12, 2011
I have a problem that I have been trying to solve the past two days, but I cannot figure it out...I have a folder which will have 60-70 Excel Files or CSV Files (they are right now). There are no headers in them, but they all have the same # of columns and the columns are in the same order in each fileI need to read each file in the folder, grab the data from the file and put it in a Database file. So all files will be read and then the data from them I guess put in a DataSet and then put into a Database (SQL).
View 3 Replies
Jan 15, 2010
I have developed an application where I need to create a page to read data from Excel File and then update it to the database. The code that I wrote works only when the application runs from my machine. When I deployed the application to the server it gave an error- 'C:PRFileIimport_File.xls' is not a valid path. Make sure that the path name is spelled correctly and that you are connected to the server on which the file resides. here is mu code -
protected void InsertData(object sender, EventArgs e)
{
OleDbConnection oConn = new OleDbConnection
(@"Provider=Microsoft.Jet.OLEDB.4.0; Data Source=C:\PuertoRicoFile\Puertorico_Iimport_File.xls ; Extended Properties=Excel 8.0 ");
OleDbCommand oCmd = new OleDbCommand("select * from [Puertorico_Data$]", oConn);
oConn.Open(); //Here [Puertorico_Data$] is the name of the sheet in the Excel file where the data is present
OleDbDataReader oleDbReader = oCmd.ExecuteReader();
string AgentIP = "";
string TagName = "";
string Status = "";
string Severity = "";
int EventCount = 0;
string EarliestEvent = "";
string LatestEvent = "";
while (oleDbReader.Read())
{
AgentIP = (string)oleDbReader[0]; // valid(oleDbReader, 0);//Here we are calling the valid method
TagName = (string)oleDbReader[1]; //valid(oleDbReader, 1);
Status = (string)oleDbReader[2]; //valid(oleDbReader, 2);
Severity = (string)oleDbReader[3]; //valid(oleDbReader, 3);
EventCount = Convert.ToInt32(oleDbReader[4]); //oleDbReader[0]; //valid(oleDbReader, 4);
EarliestEvent = (string)oleDbReader[8]; //validate(oleDbReader, 8);
EarliestEvent = EarliestEvent.Substring(0, 19);
LatestEvent = (string)oleDbReader[9]; //validate(oleDbReader, 9);
LatestEvent = EarliestEvent.Substring(0, 19);
InsertDataIntoSql(AgentIP, TagName, Status, Severity, EventCount, EarliestEvent, LatestEvent);
}
SqlConnection mySQLconnection = new SqlConnection(ConfigurationManager.ConnectionStrings["IssNetworkReportingSystemConnString"].ConnectionString);
mySQLconnection.Open();
SqlCommand cmdSql = new SqlCommand("AddMonth_Event_TotalInfo_for_Puertorico", mySQLconnection);
cmdSql.CommandType = CommandType.StoredProcedure;
dbReader = cmdSql.ExecuteReader();
dbReader.Close();
cmdSql = new SqlCommand("AddQtr_Event_TotalInfo_for_Puertorico", mySQLconnection);
cmdSql.CommandType = CommandType.StoredProcedure;
dbReader = cmdSql.ExecuteReader();
dbReader.Close();
oConn.Close();
lblMsg.Text = "Data Imported Sucessfully";
lblMsg.ForeColor = System.Drawing.Color.Green;
}
public void InsertDataIntoSql(string agentIP, string tagName,
string Stat,string severity,int eventCount, string eEvent, string lEvent)
{//inserting data into the Sql Server
SqlConnection mySQLconnection = new SqlConnection(ConfigurationManager.ConnectionStrings["IssNetworkReportingSystemConnString"].ConnectionString);
mySQLconnection.Open();
SqlCommand sqlSelect = new SqlCommand("SELECT SeverityID from Severity where SeverityDesc=@SeverityDesc",mySQLconnection);
sqlSelect.CommandType = CommandType.Text;
sqlSelect.Parameters.Add("@SeverityDesc", SqlDbType.NVarChar).Value = severity;
dbReader = sqlSelect.ExecuteReader();
int severityId = Convert.ToInt32(dbReader.Read());
dbReader.Close();
SqlCommand sqlInsert = new SqlCommand("Insert into IdsData_Puertorico(AgentIP,TagName,Status,SeverityID,EventCount,EarliestEvent,LatestEvent)" +
" values (@AgentIP,@TagName,@Status,@SeverityID,@EventCount,@EarliestEvent,@LatestEvent )" ,mySQLconnection);
sqlInsert.CommandTimeout = 0; //timeout unlimited
sqlInsert.CommandType = CommandType.Text;
sqlInsert.Parameters.Add("@AgentIP", SqlDbType.NVarChar).Value = agentIP;
sqlInsert.Parameters.Add("@TagName", SqlDbType.NVarChar).Value = tagName;
sqlInsert.Parameters.Add("@Status", SqlDbType.NVarChar).Value = Stat;
sqlInsert.Parameters.Add("@SeverityID", SqlDbType.Int).Value = Convert.ToInt32(severityId);
sqlInsert.Parameters.Add("@EventCount", SqlDbType.Int).Value = Convert.ToInt32(eventCount);
sqlInsert.Parameters.Add("@EarliestEvent", SqlDbType.DateTime).Value = DateTime.Parse(eEvent);
sqlInsert.Parameters.Add("@LatestEvent", SqlDbType.DateTime).Value = DateTime.Parse(lEvent);
sqlInsert.CommandType = CommandType.Text;
sqlInsert.ExecuteNonQuery();
mySQLconnection.Close();
}
View 4 Replies
Nov 18, 2010
Iām trying to read images from an excel file using OleDbDataReader. My excel file has 6 columns of data, the first 5 are all text but the last is image. While Iām reading the record, It's doing fine on the first 5 columns but return me with a for the sixth column.
Here is my demonistration code:
[code]....
View 4 Replies
Jan 10, 2010
I need a way to read all the rows in one column from an Excel file that the user picks from a fileupload control. I tried saving the excel file on the webserver with the upload control and then opening it with a OleDbConnection but that fails when running it from the webserver and gives the error:
Request for the permission of type 'System.Data.OleDb.OleDbPermission, System.Data, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' failed.
This works fine when just running it localhost, so i figured it might be a problem with security level at the webserver which i cant change. Instead i tried doing it with a streamreader direct from the fileupload control and because theres no need for saving the excel file on the server, but im not sure how to query the rows i need this way.
View 1 Replies
Apr 6, 2010
I need to browse excel file and update the neccessary tables based on some ID. It is basically updating employees in bulk.
View 7 Replies
Mar 15, 2011
I need to upload an excel file using a web application. Then I need t oread it in memory without saving it on the server.
Does the file need to have headers? Also the data is such that it may have or may not have values for some columns.
View 1 Replies
Sep 11, 2010
I have an Excel file called Products.xls .I have Columns A and B, with the titles NAME and QUANTITY.The name of the sheet is SHEET1.The file has about 40 lines.How do i show these data on a Gridview or Listview ?
View 4 Replies
Sep 20, 2010
I would like ask you for some ideas how can I write mechanism that will be automatically read files from folder. I don't know how to schedule the write task. I want to check for new file everyday and if the new file is in the folder read it.
View 2 Replies
Mar 19, 2010
i dont know iam placing my query correct place or not but i need ur's help, Iam Reading and storing one single excel file Successfully But
tring Path = @"E:checkinkkk.xls";
View 5 Replies
Mar 18, 2010
I am facing problem..how to read Excel file from the 5th row onwards and how to store the all records into Database Note: More over i do want store few coloumns records(3 out 8) only in my database. consider this point.
View 4 Replies
Jan 8, 2010
I want to read write excel file in my application without installing the office on my server. Means my server don't have any excel (MS office) installation. Is it necessory to install the office on server to excute the program of read or write the excel file.
View 5 Replies
May 7, 2015
I have a file pdf, in file pdf of meĀ has a table with many columns. How to Fill data from file pdf to columns of file Excel?I want fill data from file table of file pdf to file excel following format of file pdf.
View 1 Replies
Oct 12, 2010
I have multiple gridviews on a page. I would like to add these to an excel file and have a worksheet for each gridview.
I found some code on the web to accomplish this. However, when i run it i always get all the gridviews on one worksheet. The code is shown below.
Can somebody tell me how i can send multiple gridviews to an excel file to get a workbook with multiple worksheets?
[Code]....
View 2 Replies
