我正在上传一个excel文件，该文件的日期列的格式为“dd-mm-yyyy”。我试图将它转换成这种格式mm / dd / yyyy。
string[] dsplit = row[6].ToString().Split('-');
obj.ExpiryDate = string.Format("{0}/{1}/{2}", dsplit[1], dsplit[0], dsplit[2]).ToDate();
但它会抛出错误，一些隐藏的错误。
这是整个代码。我尝试了很多，没有任何预期的工作
protected void SaveEmployeefrom_Click(object sender, EventArgs e)
{
uploadExcelfile();
}
public List<ClsEmployee> uploadExcelfile()
{
List<ClsEmployee> list = new List<ClsEmployee>();
DataTable tb = new DataTable();
try
{
if (employeeregistration.HasFile)
{
string name = DateTime.Now.ToString("hhmmss_ddmmyy");
name = name + employeeregistration.FileName;
employeeregistration.SaveAs(Server.MapPath("~/ExcelFiles/") + name);
string path = System.IO.Path.GetFullPath(Server.MapPath("~/ExcelFiles/") + name);
string connString = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + path + ";Extended Properties=\"Excel 12.0;HDR=Yes;IMEX=2\"";
if (Path.GetExtension(path) == ".xls")
{
excelconnection = new OleDbConnection(connString);
excelconnection.Open();
}
else if (Path.GetExtension(path) == ".xlsx")
{
excelconnection = new OleDbConnection(connString);
excelconnection.Open();
}
OleDbCommand cmd = new OleDbCommand("SELECT [Name],[ID],[Mobile No],[Phone],[Emirates],[Nationality],[ExpiryDate],[Address] FROM [sheet1$]", excelconnection);
OleDbDataAdapter oleda = new OleDbDataAdapter(cmd);
oleda.Fill(tb);
foreach (DataRow row in tb.Rows)
{
if (!string.IsNullOrEmpty(row[6].ToString()))
{
ClsEmployee obj = new ClsEmployee();
obj.ID = 0;
// obj.Employer_ID=row[0].ToInt32();
obj.EmployeeName = row[0].ToString();
obj.EmployeeUniqueID = row[1].ToString();
obj.MobileNumber = row[2].ToString();
obj.PhoneNumber = row[3].ToString();
obj.Emirates = row[4].ToString();
obj.Nationality = row[5].ToString();
//from excel its dd-mm-yyyy
string[] dsplit = row[6].ToString().Split('-');
obj.ExpiryDate = string.Format("{0}/{1}/{2}", dsplit[1], dsplit[0], dsplit[2]).ToDate();
// obj.ExpiryDate = row[6].ToDate(); //mm-dd-yyyy
obj.Address = row[7].ToString();
list.Add(obj);
}
}
excelconnection.Dispose();
if (File.Exists(path))
{
File.Delete(path);
}
int total = tb.Rows.Count;
if (total>0)
{
GV_Employee.DataSource = null;
GV_Employee.DataSource = list;
GV_Employee.DataBind();
GV_Employee.Visible = true;
ResultLabel.ResultLabelAttributes("Uploaded successfull !!!", ProjectUserControls.Enums.ResultLabel_Color.Yellow);
ResultPanel.Controls.Add(ResultLabel);
}
else
{
ResultLabel.ResultLabelAttributes("No Record In Excel Sheet !!!", ProjectUserControls.Enums.ResultLabel_Color.Red);
ResultPanel.Controls.Add(ResultLabel);
}
//txtSerialQuantity.Text = total.ToString();
////// trbtnCheckAll.Visible = true;
////div_automatic.Visible = true;
////lbl_totalSelected.Text = "Total Selected = " + total.ToString();
}
}
catch (Exception x)
{
x.ToString(); //ResultLabel.ResultLabelAttributes(x.Message, ProjectUserControls.Enums.ResultLabel_Color.Red);
ResultLabel.ResultLabelAttributes(x.Message, ProjectUserControls.Enums.ResultLabel_Color.Red);
ResultPanel.Controls.Add(ResultLabel);
}
return list;
}
protected void Button1_Click(object sender, EventArgs e)
{
ClsEmployee obj1 = new ClsEmployee();
List<ClsEmployee> list = new List<ClsEmployee>();
try
{
foreach (GridViewRow item in GV_Employee.Rows)
{
ClsEmployee obj = new ClsEmployee();
obj.ID = 0;
obj.Employer_ID = cmbEmployer.SelectedValue.ToInt32();// ((Literal)GV_Employee.Rows[1].FindControl("Ltrl_EmployerID")).Text.ToInt32();
obj.EmployeeName = ((Literal)item.FindControl("Ltrl_Name")).Text.ToString();
obj.EmployeeUniqueID = ((Literal)item.FindControl("Ltrl_EmployeeUniqueID")).Text.ToString();
obj.MobileNumber = ((Literal)item.FindControl("Ltrl_Mobile")).Text.ToString();
obj.PhoneNumber = ((Literal)item.FindControl("Ltrl_PhoneNo")).Text.ToString();
obj.Emirates_ID = ((Literal)GV_Employee.Rows[1].FindControl("Ltrl_Emirates")).Text.ToInt32();
obj.Nationality_ID = ((Literal)GV_Employee.Rows[1].FindControl("Ltrl_Nationality")).Text.ToInt32();
obj.ExpiryDate = ((Literal)item.FindControl("Ltrl_Expiry")).Text.ToDate();
obj.Address = ((Literal)item.FindControl("Ltrl_Address")).Text.ToString();
obj.LFMD = "";
obj.RFMD = "";
obj.PinCode = "";
obj.IsFingerAuth = false;
obj.IsActive = true;
list.Add(obj);
}
obj1.SaveEmployeefromExcelFile(list);
ResultLabel.ResultLabelAttributes("Save successfull !!!", ProjectUserControls.Enums.ResultLabel_Color.Yellow);
ResultPanel.Controls.Add(ResultLabel);
GV_Employee.DataSource = null;
GV_Employee.Visible = false;
}
catch (Exception ex)
{
ResultLabel.ResultLabelAttributes(ex.ToString(), ProjectUserControls.Enums.ResultLabel_Color.Red);
ResultPanel.Controls.Add(ResultLabel);
}
}
答案 0 :(得分：3)
试试这段代码。
for(i=0; i < min(length, length2); i++) {
if ( singeLine[i] == '\n' || singleLine2[i] == '\n')
break;
/* Do work */
}
答案 1 :(得分：0)
当您从excel获得时，我认为row[6]是DateTime，您只需要;
row[6].ToString("MM/dd/yyyy", CultureInfo.InvariantCulture);
将DateTime转换为string并将其分成一般坏主意。 mm说明符是分钟，顺便说一句，MM是几个月。
答案 2 :(得分：0)
试试这个..
String MyString = "12-30-2014"; // get value from text field
DateTime MyDateTime = new DateTime();
MyDateTime = DateTime.ParseExact(MyString, "MM-dd-yyyy",null);
String MyString_new = MyDateTime.ToString("dd-MM-yyyy");