如何在将数据插入数据库后显示错误消息 [英] How to display error messages after inserting the data into database
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问题描述
Below is my button click event the problem is till the sheet is uploaded successfully i am getting the label messages as error messages on button click but once it is uploaded successfully when i click the button the label messages are not getting displayed
protected void btnUpload_Click(object sender, EventArgs e)
{
//Validations for From Date,To Date and File Uploader
if (ddlmonth.SelectedValue == "0")
{
lblerrorMessage.Text = "Please Select The Month";
}
else if (ddlyear.SelectedValue == "0")
{
lblerrorMessage.Text = "Please Select The Year";
}
else if (FileUpload1.HasFile == false)
{
lblerrorMessage.Text = "Please Select A File";
}
else
{
string fileName = Path.GetFileName(FileUpload1.PostedFile.FileName);
FileUpload1.PostedFile.SaveAs(Server.MapPath("~/Files/" + fileName));
string fullpath = Path.GetFullPath(Server.MapPath("~/Files/" + fileName));
ReadExcelSheet obj = new ReadExcelSheet();
//send filepath,sheet number,selected rows to class file
DataTable dt = obj.Read(fullpath, 1);
bool Ismatch = false;
//string getmonth = txtfromdate.Text.Trim();
//string getyear = txtToDate.Text.Trim();
for (int i = 0; i < dt.Rows.Count; i++)
{
string date = dt.Rows[i]["Month"].ToString();
string[] date1 = date.Split('/');
string month = date1[0];
string year = date1[2];
//newly added for the existing code to obtain the month and year
//from date
//string[] splitmonth = getmonth.Split('/');
//string newmonth = splitmonth[0].ToString();
//txtfromdate.Text = newmonth.ToString();
////To date
//string[] splityear = getyear.Split('/');
//string newyear = splityear[2].ToString();
//txtToDate.Text = newyear.ToString();
if (month == ddlmonth.SelectedValue && year == ddlyear.SelectedValue)
{
Ismatch = true;
//break;
}
else
{
Ismatch = false;
break;
}
}
if (Ismatch == true)
{
lblerrorMessage.Visible = false;
lblerrorMessage.Text = "Valid Document";
}
else
{
lblerrorMessage.Text = "Not a Valid Document";
ddlmonth.ClearSelection();
ddlyear.ClearSelection();
label1.Text = "";
return;
}
//checking the input month and year records exists or not in DB
SqlCommand cmd = new SqlCommand("select Uploaded from TestMCount ", con);
SqlDataAdapter da = new SqlDataAdapter(cmd);
DataTable DBdt = new DataTable();
da.Fill(DBdt);
if (DBdt.Rows.Count > 0)
{
int month1;
bool validMonth = int.TryParse(ddlmonth.SelectedValue, out month1);
int year1;
bool validYear = int.TryParse(ddlyear.SelectedValue, out year1);
var filteredRows = from row in DBdt.AsEnumerable()
let date = row.Field<System.DateTime>("Uploaded")
where date.Month == month1 && date.Year == year1
select row;
DataRow[] dr = filteredRows.ToArray();
DataTable selectedrows = filteredRows.CopyToDataTable();
if (selectedrows.Rows.Count > 0)
{
for (int i = 0; i <= selectedrows.Rows.Count - 1; i++)
{
string date2 = selectedrows.Rows[i]["Uploaded"].ToString();
con.Open();
SqlCommand cmd1 = new SqlCommand("delete from TestMCount where Uploaded='" + date2 + "'", con);
SqlDataAdapter da1 = new SqlDataAdapter(cmd1);
cmd1.ExecuteNonQuery();
con.Close();
}
SqlBulkCopy objbulk = new SqlBulkCopy(con);
objbulk.DestinationTableName = "TestMCount";
//mapping the columns
objbulk.ColumnMappings.Add("ID", "MID");
objbulk.ColumnMappings.Add("Month", "Uploaded");
objbulk.ColumnMappings.Add("Client Name", "ClientName");
objbulk.ColumnMappings.Add("Charges", "Charge");
objbulk.ColumnMappings.Add("Payment", "Payment");
objbulk.ColumnMappings.Add("Adjustment", "Adjustment");
objbulk.ColumnMappings.Add("W/O", "WO");
con.Open();
objbulk.WriteToServer(dt);
con.Close();
label1.Text = "Uploaded Successfully";
}
else
{
SqlBulkCopy objbulk = new SqlBulkCopy(con);
objbulk.DestinationTableName = "TestMCount";
//mapping the columns
objbulk.ColumnMappings.Add("ID", "MID");
objbulk.ColumnMappings.Add("Month", "Uploaded");
objbulk.ColumnMappings.Add("Client Name", "ClientName");
objbulk.ColumnMappings.Add("Charges", "Charge");
objbulk.ColumnMappings.Add("Payment", "Payment");
objbulk.ColumnMappings.Add("Adjustment", "Adjustment");
objbulk.ColumnMappings.Add("W/O", "WO");
con.Open();
objbulk.WriteToServer(dt);
con.Close();
label1.Text = "Uploaded Successfully";
}
}
else
{
SqlBulkCopy objbulk = new SqlBulkCopy(con);
objbulk.DestinationTableName = "TestMCount";
//mapping the columns
objbulk.ColumnMappings.Add("Month", "Uploaded");
objbulk.ColumnMappings.Add("ID", "MID");
objbulk.ColumnMappings.Add("Client Name", "ClientName");
objbulk.ColumnMappings.Add("Charges", "Charge");
objbulk.ColumnMappings.Add("Payment", "Payment");
objbulk.ColumnMappings.Add("Adjustment", "Adjustment");
objbulk.ColumnMappings.Add("W/O", "WO");
con.Open();
objbulk.WriteToServer(dt);
con.Close();
label1.Text = "Uploaded Successfully";
//txtfromdate.Text = "";
//txtToDate.Text = "";
ddlmonth.ClearSelection();
ddlyear.ClearSelection();
}
}
我的尝试:
i找不到任何解决方案ii在页面加载中调用我的按钮事件它无法正常工作
What I have tried:
i could not find any solution i i ma calling my button event in page load it is not working properly
推荐答案
清除标签
按钮上的文字
点击
Clear thelabel
text onbutton
click
protected void btnUpload_Click(object sender, EventArgs e)
{
lblerrorMessage.Text = "";
.
.
.
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