CODEWITHSUNDEEP
c#asp.netsharepoint-2010
Jagadeesh
Jagadeesh

Reputation: 11

Export To Excel with Text more than 300 Characters not working

I have field called "Comments" in my DataTable which has few records more than 255 characters.When we export the DataTable to Excel using the below code, the data is pushed into Excel but the Comments field record which has more than 255 characters overlaps other cells in Excel and the next column record is pushed to next row.

Code:

Response.Clear();
Response.AddHeader("content-disposition", "attachment;filename=XXXXXX.xls");
Response.Charset = "";
Response.Cache.SetCacheability(HttpCacheability.NoCache);
Response.ContentType = "application/vnd.xls";
foreach (DataRow dr in dt.Rows){
tab = "";
for (int i = 0; i < dt.Columns.Count; i++){
Response.Write(tab + dr[i].ToString());
tab = "\t";
}
Response.Write("\n");
}
Response.End();

Can you guys please help

Upvotes: 1

Views: 3566

Answers (3)

Naveen Desosha
Naveen Desosha

Reputation: 357

Try to use this code, may it ll help

    public static void DataSetsToExcel(DataSet dataSet, string filepath)
    {
        try
        {
            string connString = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + filepath + ";Extended Properties=Excel 12.0 Xml;";
            string tablename = "";
            DataTable dt = new DataTable();
            foreach (System.Data.DataTable dataTable in dataSet.Tables)
            {
                dt = dataTable;
                tablename = dataTable.TableName;
                using (OleDbConnection con = new OleDbConnection(connString))
                {
                    con.Open();
                    StringBuilder strSQL = new StringBuilder();
                    strSQL.Append("CREATE TABLE ").Append("[" + tablename + "]");
                    strSQL.Append("(");
                    for (int i = 0; i < dt.Columns.Count; i++)
                    {
                        strSQL.Append("[" + dt.Columns[i].ColumnName + "] text,");
                    }
                    strSQL = strSQL.Remove(strSQL.Length - 1, 1);
                    strSQL.Append(")");

                    OleDbCommand cmd = new OleDbCommand(strSQL.ToString(), con);
                    cmd.ExecuteNonQuery();

                    for (int i = 0; i < dt.Rows.Count; i++)
                    {
                        strSQL.Clear();
                        StringBuilder strfield = new StringBuilder();
                        StringBuilder strvalue = new StringBuilder();
                        for (int j = 0; j < dt.Columns.Count; j++)
                        {
                            strfield.Append("[" + dt.Columns[j].ColumnName + "]");
                            strvalue.Append("'" + dt.Rows[i][j].ToString().Replace("'", "''") + "'");
                            if (j != dt.Columns.Count - 1)
                            {
                                strfield.Append(",");
                                strvalue.Append(",");
                            }
                            else
                            {
                            }
                        }
                        if (strvalue.ToString().Contains("<br/>"))
                        {
                            strvalue = strvalue.Replace("<br/>", Environment.NewLine);
                        }
                        cmd.CommandText = strSQL.Append(" insert into [" + tablename + "]( ")
                            .Append(strfield.ToString())
                            .Append(") values (").Append(strvalue).Append(")").ToString();
                        cmd.ExecuteNonQuery();
                    }
                    con.Close();
                }
            }
        }
        catch (Exception ex)
        {                
        }
    }

Upvotes: 0

Antonio Bakula
Antonio Bakula

Reputation: 20693

Use EPPlus excel library and create real excel files, it's free and open source and works really well.

I tested this scenario and fill cell with text longer than 4096 bytes, and it works OK, but with excel 2010 and xslx format.

Here is the example code :

  ExcelPackage ePack = new ExcelPackage(new FileInfo("c:\\temp\\temp.xlsx"));
  ExcelWorksheet ws = ePack.Workbook.Worksheets.Add("Sheet1");
  string longText = "Lorem ipsum ..... <snipped>";
  ws.Cells[1, 1].Value = longText;
  ePack.Save();

btw. you can find here example how to export DataTable to excel file :

https://stackoverflow.com/a/9569827/351383

Upvotes: 0

fankt
fankt

Reputation: 1047

Because it's Excel's limits

Worksheet and workbook specifications and limits

Column width 255 characters

Reference: Excel specifications and limits

Upvotes: 1

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