Using sql bulk copy throwing exception -The given value of type String from the data source cannot be converted to type int of the specified target column

Question

Hi All,
I am reading notepads files and inserting data in sql tables from the notepad-
while performing sql bulk copy on this line it throws exception - "bulkcopy.WriteToServer(dt); -"data type related(mentioned in subject )".
Please go through my  logic and tell me what to change to avoid this error -
public void Main()
Dts.TaskResult = (int)ScriptResults.Success;
string[] filePaths = Directory.GetFiles(@"C:\Users\jainruc\Desktop\Sudhanshu\master_db\Archive\test\content_insert\");
for (int k = 0; k < filePaths.Length; k++)
string[] lines = System.IO.File.ReadAllLines(filePaths[k]);
//table name needs to extract after = sign
string[] pathArr = filePaths[0].Split('\\');
string tablename = pathArr[9].Split('.')[0];
DataTable dt = new DataTable(tablename);
|
string[] arrColumns = lines[1].Split(new char[] { '|' });
foreach (string col in arrColumns)
dt.Columns.Add(col);
for (int i = 2; i < lines.Length; i++)
string[] columnsvals = lines[i].Split(new char[] { '|' });
DataRow dr = dt.NewRow();
for (int j = 0; j < columnsvals.Length; j++)
//Console.Write(columnsvals[j]);
if (string.IsNullOrEmpty(columnsvals[j]))
dr[j] = DBNull.Value;
else
dr[j] = columnsvals[j];
dt.Rows.Add(dr);
SqlConnection conn = new SqlConnection();
conn.ConnectionString = "Data Source=UI3DATS009X;" + "Initial Catalog=BHI_CSP_DB;" + "User Id=sa;" + "Password=3pp$erv1ce$4";
conn.Open();
SqlBulkCopy bulkcopy = new SqlBulkCopy(conn);
bulkcopy.DestinationTableName = dt.TableName;
bulkcopy.WriteToServer(dt);
conn.Close();
Issue 1:-
I am reading notepad: getting all column and values in my data table now while inserting for date and time or integer field i need to do explicit conversion how to write for specific column before bulkcopy.WriteToServer(dt);
Issue 2:- Notepad does not contains all columns nor in specific sequence in that case i can add few column ehich i am doing now but the issue is now data table will add my columns + notepad columns and while inserting how to assign in perticular colums?
sudhanshu sharma Do good and cast it into river :)

Answer 1

Hi,
I think you'll have to do an explicit column mapping if they are not in exact sequence in both source and destination.
Have a look at this link:
https://msdn.microsoft.com/en-us/library/system.data.sqlclient.sqlbulkcopycolumnmapping(v=vs.110).aspx
Good Luck!
Kaur.
Please mark as answer if this resolves your issue.