I am trying to export grid view data into excel 2007 i.e. xlsx format. but its giving error.
i am using following code
protected void Button1_Click(object sender, EventArgs e)
{
Response.Clear();
Response.Buffer = true;
Response.AddHeader("content-disposition", "attachment;filename=text.xls");
Response.Charset = "";
Response.ContentType = "application/vnd.ms-excel";
StringWriter sw = new StringWriter();
HtmlTextWriter hw = new HtmlTextWriter(sw);
GridView1.DataSource = Presenter.CurrentModel.BillStatementGlModelRecords;
GridView1.DataBind();
GridView1.AllowPaging = false;
GridView1.DataBind();
GridView1.HeaderRow.Style.Add("background-color", "#FFFFFF");
for (int i = 0; i < GridView1.Rows.Count; i++)
{
GridViewRow row = GridView1.Rows[i];
//Change Color back to white
row.BackColor = System.Drawing.Color.White;
//Apply text style to each Row
row.Attributes.Add("class", "textmode");
}
GridView1.RenderControl(hw);
//style to format numbers to string
string style = #"<style> .textmode { mso-number-format:\#; } </style>";
Response.Write(style);
Response.Output.Write(sw.ToString());
Response.Flush();
Response.End();
}
but not working properly and on opening the file it gives following error
"Excel cannot open the file 'ChangeRequestList[2].xlsx' because the file
format or file extension is not valid. Verify that the file has not been
corrupted and that the file extension matches the format of the file"
Can anyone help me?
Thanks
Have a look at this Code - I already used it and it's working.
But it produces plain text (csv I guess) and not xlsx but I think that shouldn't be a problem though.
Related
I'm trying to export the contents of the gridview to excelsheet and the last row of the gridview is always missing in the excel sheet.
I think it might be due to the header row but could not figure out how to overcome this. Below is the code for exporting to excel sheet
private void btnExportToExcel_OnClick(object sender, EventArgs e)
{
Response.Clear();
Response.Buffer = true;
Response.AddHeader("content-disposition", "attachment;filename=GridViewExport.xls");
Response.Charset = "";
Response.ContentType = "application/vnd.ms-excel";
using (StringWriter sw = new StringWriter())
{
HtmlTextWriter hw = new HtmlTextWriter(sw);
//To Export all pages
GridView1.AllowPaging = false;
GridView1.RenderControl(hw); //here gridview is not rendering last row
//style to format numbers to string
string style = #"<style> .textmode { } </style>";
Response.Write(style);
Response.Output.Write(sw.ToString());
Response.Flush();
Response.End();
}
}
This is working fine for me. Here is my code behind with simple data.My aspx page has just a grid and an export button
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
DataTable dt = new DataTable();
dt.Columns.Add("Id");
DataRow dr = dt.NewRow();
dr["Id"] = 1;
dt.Rows.Add(dr);
dr = dt.NewRow();
dr["Id"] = 2;
dt.Rows.Add(dr);
//To Export all pages
grdTest.AllowPaging = false;
grdTest.AllowSorting = false;
grdTest.DataSource = dt;
grdTest.DataBind();
}
public override void VerifyRenderingInServerForm(Control control)
{
/* Verifies that the control is rendered */
}
protected void btnExport_Click(object sender, EventArgs e)
{
{
Response.Clear();
Response.Buffer = true;
Response.AddHeader("content-disposition", "attachment;filename=GridViewExport.xls");
Response.Charset = "";
Response.ContentType = "application/vnd.ms-excel";
using (StringWriter sw = new StringWriter())
{
HtmlTextWriter hw = new HtmlTextWriter(sw);
grdTest.RenderControl(hw); //here gridview is not rendering last row
//style to format numbers to string
string style = #"<style> .textmode { } </style>";
Response.Write(style);
Response.Output.Write(sw.ToString());
Response.Flush();
Response.End();
}
}
}
I could not found solution online anywhere but I found the reason why this was happening, it was due to one additonal GridviewRow being added to the gridview on rowDatabound, and that addition of single row was skipping the very last row.
To fix this, before gridview databinding, I added one empty footer row to workaround the issue:
DataRow dr= dt.NewRow();
dt.Rows.Add(dr);
GridView1.DataSource = dt;
GridView1.DataBind();
I have added C# code behind my page to export GridView1 to an Excel file. Issue is, it will create an Excel file, however, the only data is: .textmode { } shown in cell A1. Gotta be something simple I am missing here... Any thoughts would be greatly appreciated!
protected void ExcelButton_Click(object sender, EventArgs e)
{
Response.Clear();
Response.Buffer = true;
Response.ContentType = "application/vnd.ms-excel";
Response.AddHeader("content-disposition",
"attachment;filename=GridViewExport.xls");
Response.Charset = "";
StringWriter sw = new StringWriter();
HtmlTextWriter hw = new HtmlTextWriter(sw);
GridView1.AllowPaging = false;
GridView1.DataBind();
//Change the Header Row back to white color
GridView1.HeaderRow.Style.Add("background-color", "#FFFFFF");
//Apply style to Individual Cells
GridView1.HeaderRow.Cells[0].Style.Add("background-color", "green");
GridView1.HeaderRow.Cells[1].Style.Add("background-color", "green");
GridView1.HeaderRow.Cells[2].Style.Add("background-color", "green");
GridView1.HeaderRow.Cells[3].Style.Add("background-color", "green");
for (int i = 0; i < GridView1.Rows.Count; i++)
{
GridViewRow row = GridView1.Rows[i];
//Change Color back to white
row.BackColor = System.Drawing.Color.White;
//Apply text style to each Row
row.Attributes.Add("class", "textmode");
//Apply style to Individual Cells of Alternating Row
if (i % 2 != 0)
{
row.Cells[0].Style.Add("background-color", "#C2D69B");
row.Cells[1].Style.Add("background-color", "#C2D69B");
row.Cells[2].Style.Add("background-color", "#C2D69B");
row.Cells[3].Style.Add("background-color", "#C2D69B");
}
}
GridView1.RenderControl(hw);
//style to format numbers to string
string style = #"<style> .textmode { } </style>";
Response.Write(style);
Response.Output.Write(sw.ToString());
Response.Flush();
Response.End();
}
I have created a simple application while will export data into excel. Now the data is exported to excel successfully but it will show an exception of formatting when I opened the downloaded excel.
public ActionResult ExportOrder()
{
List<OrderItem> data = new List<OrderItem>();
GridView gv = new GridView();
gv.DataSource = data;
gv.DataBind();
Response.ClearContent();
Response.Buffer = true;
Response.AddHeader("content-disposition", "attachment; filename=" + Common.GenerateSerialNo() + ".xls");
Response.ContentType = "application/ms-excel";
Response.Charset = "";
StringWriter sw = new StringWriter();
HtmlTextWriter htw = new HtmlTextWriter(sw);
gv.RenderControl(htw);
Response.Output.Write(sw.ToString());
Response.Flush();
Response.End();
return RedirectToAction("OrderProducts");
}
This is my formatting issue while opening in Excel.
Format Issue Image
Please suggest me to solve this issue.
I tried but found solutions to use NPOI or other Paid Tools. Can we solve the formatting issue without using any third party tool. I also tried some solutions but it didn't work for me.
You need to set the style on data bound not when doing the export as follows
private void gvPrint_RowDataBound(object sender, System.Web.UI.WebControls.GridViewRowEventArgs e)
{
if (e.Row.RowType == DataControlRowType.DataRow) {
e.Row.Cells(0).Attributes.Add("class", "text");
e.Row.Cells(1).Attributes.Add("class", "text");
e.Row.Cells(2).Attributes.Add("class", "text");
e.Row.Cells(6).Attributes.Add("class", "text");
e.Row.Cells(7).Attributes.Add("class", "text");
e.Row.Cells(8).Attributes.Add("class", "text");
}
}
In my page I have two textbox controls, where I am gating the date from the Calendar Extender & in the export to excel Button I am going to export the Gridview data to excel sheet.
When I am gating the excel sheet its show the the textbox & button also from which i am export the excel Sheet.
I have written the export code in the Export Button.
Like:-
protected void Export_to_Excel_Click(object sender, EventArgs e)
{
try
{
Response.ClearContent();
Response.Buffer = true;
Response.AddHeader("content-disposition", string.Format("attachment; filename={0}", "Customers.xls"));
Response.ContentType = "application/ms-excel";
StringWriter sw = new StringWriter();
HtmlTextWriter htw = new HtmlTextWriter(sw);
Grd_MidData.AllowPaging = false;
bindgriddata();
//Change the Header Row back to white color
Grd_MidData.HeaderRow.Style.Add("background-color", "#FFFFFF");
//Applying stlye to gridview header cells
for (int i = 0; i < Grd_MidData.HeaderRow.Cells.Count; i++)
{
Grd_MidData.HeaderRow.Cells[i].Style.Add("background-color", "#df5015");
}
Grd_MidData.RenderControl(htw);
Response.Write(sw.ToString());
Response.Flush();
}
catch (Exception ee)
{
}
}
When I am gating the excel sheet it shows the gridview data along with the two text box & the button from where I am doing the filtering.
So any one suggest me, How to show only the gridview data but not show the Textbox & button on the excel sheet.
You have to bind the data to your excel code,
using below code
bindgriddata();
Response.ClearContent();
Response.Buffer = true;
Response.AddHeader("content-disposition", string.Format("attachment; filename={0}", "Customers.xls"));
Response.ContentType = "application/ms-excel";
StringWriter sw = new StringWriter();
HtmlTextWriter ht = new HtmlTextWriter(sw);
Grd_MidData.RenderControl(ht);
Response.Write(sw.ToString());
Response.End();
it is working for me.
Here the gridview data is showing along with the From date: To Date: textbox & the button also. So how can i remove these field from the sheet.
you can use close xml to generate excel it will give more functionlity to create excel and formatting.
protected void Export_to_Excel_Click(object sender, EventArgs e)
{
bindgriddata();
Grd_MidData.DataSource = objDS; // Dataset
Grd_MidData.DataBind();
using (XLWorkbook wb = new XLWorkbook())
{
try
{
//creating worksheet
var ws = wb.Worksheets.Add("Report");
//adding columms header
int columnscount = objDS.Tables[0].Columns.Count;
char a = 'A';
for (int j = 1; j <= columnscount; j++)
{
string str = a + "1";
ws.Cell(str).Value = objDS.Tables[0].Columns[j - 1].ColumnName.ToString();
ws.Cell(str).Style.Border.OutsideBorder = XLBorderStyleValues.Thin;
a++;
}
ws.Columns().AdjustToContents();
//formatting columns header
var rngheaders = ws.Range("A1:J1");
rngheaders.FirstRow().Style
.Font.SetBold()
.Font.SetFontSize(12)
.Font.SetFontColor(XLColor.Black)
.Fill.SetBackgroundColor(XLColor.DeepSkyBlue)
.Alignment.SetHorizontal(XLAlignmentHorizontalValues.Center)
.Border.OutsideBorder = XLBorderStyleValues.Thin;
////adding data to excel
int k = 2;
foreach (DataRow row in objDS.Tables[0].Rows)
{
char b = 'A';
string str = b + "" + k;
for (int i = 0; i < objDS.Tables[0].Columns.Count; i++)
{
ws.Cell(str).Value = row[i].ToString();
ws.Cell(str).Style.Border.OutsideBorder = XLBorderStyleValues.Thin;
ws.Cell(str).Style.Alignment.SetHorizontal(XLAlignmentHorizontalValues.Left);
b++;
str = b + "" + k;
}
k++;
}
Response.Clear();
Response.Buffer = true;
Response.Charset = "";
Response.ContentType = "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet";
Response.AddHeader("content-disposition", "attachment;filename=Customer.xlsx");
}
catch { }
using (MemoryStream MyMemoryStream = new MemoryStream())
{
wb.SaveAs(MyMemoryStream);
MyMemoryStream.WriteTo(Response.OutputStream);
Response.Flush();
Response.End();
}
}
}
I had the same issue when exporting a GridView. I added a try/catch and exported the message to Excel and then realized that it was generating an error. I solved it thanks to the following answer: GridView must be placed inside a form tag with runat="server" even after the GridView is within a form tag
In my gridview i have 30000 records,while i export to excel, it export upto near 12000 records only,bellow my code to export to excel.
GridView1.AllowPaging = false;
DataTable dt = (DataTable)Session["tabledata"];
GridView1.DataSource = dt;
GridView1.DataBind();
Response.ClearContent();
Response.Buffer = true;
Response.AddHeader("content-disposition", string.Format("attachment; filename={0}", "Customers.xls"));
Response.ContentType = "application/ms-excel";
StringWriter sw = new StringWriter();
HtmlTextWriter htw = new HtmlTextWriter(sw);
//Change the Header Row back to white color
GridView1.HeaderRow.Style.Add("background-color", "Red");
//Applying stlye to gridview header cells
for (int i = 0; i < GridView1.HeaderRow.Cells.Count; i++)
{
GridView1.HeaderRow.Cells[i].Style.Add("background-color", "Red");
}
GridView1.RenderControl(htw);
Response.Write(sw.ToString());
Response.End();
Here how can i export all(30k) gridview records to excel?
Here is a sample code to save your grid data to an excel file
protected void ExportToExcel(object sender, EventArgs e)
{
Response.Clear();
Response.Buffer = true;
Response.AddHeader("content-disposition", "attachment;filename=GridViewExport.xls");
Response.Charset = "";
Response.ContentType = "application/vnd.ms-excel";
using (StringWriter sw = new StringWriter())
{
HtmlTextWriter hw = new HtmlTextWriter(sw);
//To Export all pages
GridView1.AllowPaging = false;
this.BindGrid();
GridView1.HeaderRow.BackColor = Color.White;
foreach (TableCell cell in GridView1.HeaderRow.Cells)
{
cell.BackColor = GridView1.HeaderStyle.BackColor;
}
foreach (GridViewRow row in GridView1.Rows)
{
row.BackColor = Color.White;
foreach (TableCell cell in row.Cells)
{
if (row.RowIndex % 2 == 0)
{
cell.BackColor = GridView1.AlternatingRowStyle.BackColor;
}
else
{
cell.BackColor = GridView1.RowStyle.BackColor;
}
cell.CssClass = "textmode";
}
}
GridView1.RenderControl(hw);
//style to format numbers to string
string style = #"<style> .textmode { } </style>";
Response.Write(style);
Response.Output.Write(sw.ToString());
Response.Flush();
Response.End();
}
}
I would suggest that you take a look at OpenXmlWriter class for exporting large amount of data to excel (that should prevent cache problems).
To export data to Excel, you can use the ClosedXML.Report library (https://github.com/ClosedXML/ClosedXML.Report). Believe me, this is a wonderful library and easy for her to use. The library does not need Excel Interop. ClosedXML.Report generates an Excel file based on a template that you can create in Excel using any formatting. For example:
var template = new XLTemplate(#".\Templates\report.xlsx");
using (var db = new DbDemos())
{
var cust = db.customers.LoadWith(c => c.Orders).First();
template.AddVariable(cust);
template.Generate();
}
template.SaveAs(outputFile);