Develop Reference

How to manually add Excel columns headers for a generated spreadsheet

I have developed an excel sheet using c# gridview. How do I add a header row and set column names via code. This is my current code...
protected void ExportToExcel1(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;
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();
}
}

Export gridview in excel

I have two gridviews on a page. When I click on Button3 it exports gridview data to excel perfectly.
but when I click on Button5 it exports data of gridview to excel and in excel file contains only:
<style> .textmode { } </style><div>
here is my c# code:
protected void Button3_Click(object sender, EventArgs e)
{
Response.Clear();
Response.Buffer = true;
Response.AddHeader("content-disposition", "attachment;filename=ExportFile.xls");
Response.Charset = "";
Response.ContentType = "application/vnd.ms-excel";
using (StringWriter sw = new StringWriter())
{
HtmlTextWriter hw = new HtmlTextWriter(sw);
GridView1.AllowPaging = false;
GridView1.Columns[0].Visible = false;
GridView1.Columns[1].Visible = false;
//GridView1.HeaderRow.Style.Add("background-color", "#FFFFFF");
this.GridView1.DataBind();
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();
}
}
protected void Button5_Click(object sender, EventArgs e)
{
Response.Clear();
Response.Buffer = true;
Response.AddHeader("content-disposition", "attachment;filename=ExportFile.xls");
Response.Charset = "";
Response.ContentType = "application/vnd.ms-excel";
using (StringWriter sw = new StringWriter())
{
HtmlTextWriter hw = new HtmlTextWriter(sw);
GridView2.AllowPaging = false;
GridView2.Columns[0].Visible = false;
GridView2.Columns[1].Visible = false;
//GridView1.HeaderRow.Style.Add("background-color", "#FFFFFF");
this.GridView2.DataBind();
GridView2.HeaderRow.BackColor = Color.White;
foreach (TableCell cell in GridView2.HeaderRow.Cells)
{
cell.BackColor = GridView2.HeaderStyle.BackColor;
}
foreach (GridViewRow row in GridView2.Rows)
{
row.BackColor = Color.White;
foreach (TableCell cell in row.Cells)
{
if (row.RowIndex % 2 == 0)
{
cell.BackColor = GridView2.AlternatingRowStyle.BackColor;
}
else
{
cell.BackColor = GridView2.RowStyle.BackColor;
}
cell.CssClass = "textmode";
}
}
GridView2.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();
}
}

label backbround color not working properly when export to excel in asp.net

can any one help me to solve the issue
i am giving background color to label dynamically but it is not showing in excel sheet when i am exporting to excel
her is my code
DataSet ds = DST;
ds.Tables.Remove(ds.Tables[0]);
// string style = #"<style> .text { mso-number-format:\#Medium Date; } </style> ";
lblTitle.Text = "<h3 border='0' align='center'><b>Sales Report </b></h3>";
HtmlForm form = new HtmlForm();
string attachment = "attachment; filename=BPOSalesReport.xls";
Response.ClearContent();
Response.AddHeader("content-disposition", attachment);
Response.ContentType = "application/ms-excel";
StringWriter stw = new StringWriter();
HtmlTextWriter htextw = new HtmlTextWriter(stw);
GridView gv;
Panel PNl = new Panel();
Label lbldate;
LiteralControl ltlbldate;
for (int k = 0; k < ds.Tables.Count; k++)
{
gv = new GridView();
lbldate = new Label();
ltlbldate = new LiteralControl();
//lbldate.CssClass = "required";
gv.ID = ds.Tables[k].TableName;
gv.DataSource = ds.Tables[k];
gv.DataBind();
gv.HeaderRow.Style.Add("background-color", "#6699FF");
gv.HeaderStyle.ForeColor = System.Drawing.Color.Black;
lbldate.Text = datechecking(ds.Tables[k].TableName.ToString());
lbldate.BackColor = System.Drawing.Color.Yellow;
PNl.Controls.Add(lbldate);
PNl.Controls.Add(gv);
PNl.Controls.Add(new LiteralControl("<br />"));
PNl.Controls.Add(new LiteralControl("<br />"));
PNl.Controls.Add(new LiteralControl("<br />"));
}
form.Attributes["runat"] = "server";
form.Controls.Add(PNl);
this.Controls.Add(form);
lblTitle.Visible = true;
lblTitle.RenderControl(htextw);
form.RenderControl(htextw);
// Response.Write(style);
Response.Write(stw.ToString());
Response.End();

May be this line of code will help you.
protected void ImageButton1_Click(object sender, ImageClickEventArgs e)
{
Response.ClearContent();
Response.Buffer = true;
Response.AddHeader("content-disposition", string.Format("attachment; filename={0}", "Details.xls"));
Response.ContentType = "application/ms-excel";
StringWriter sw = new StringWriter();
HtmlTextWriter htw = new HtmlTextWriter(sw);
GridView1.AllowPaging = false;
//Change the Header Row back to white color
GridView1.HeaderRow.Style.Add("background-color", "#000000");
//Applying stlye to gridview header cells
for (int i = 0; i < GridView1.HeaderRow.Cells.Count; i++)
{
GridView1.HeaderRow.Cells[i].Style.Add("background-color", "#000000");
}
int j = 1;
//This loop is used to apply stlye to cells based on particular row
foreach (GridViewRow gvrow in GridView1.Rows)
{
if (j <= GridView1.Rows.Count)
{
if (j % 2 != 0)
{
for (int k = 0; k < gvrow.Cells.Count; k++)
{
gvrow.Cells[k].Style.Add("background-color", "#FFFFFF");
}
}
}
j++;
}
GridView1.RenderControl(htw);
Response.Write(sw.ToString());
Response.End();
}

Asp.Net - Export two Gridviews to excel or pdf

I have a page that shows two grids side by side; "Expenses" and "Income".
I want the user to be able to export it to excel or pdf or print it as it's shown on the web page, side by side.
How can I do it?
What's the best practice?
Thanks.

Probably Reporting Services (SSRS)
but in case sql server

protected void btnExportExcel_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";
StringWriter sw = new StringWriter();
HtmlTextWriter hw = new HtmlTextWriter(sw);
GridView1.AllowPaging = false;
// Re-Bind data to GridView
using (CompMSEntities1 CompObj = new CompMSEntities1())
{
Start = Convert.ToDateTime(txtStart.Text);
End = Convert.ToDateTime(txtEnd.Text);
GridViewSummaryReportCategory.DataSource = CompObj.SP_Category_Summary(Start, End);
SP_Category_Summary_Result obj1 = new SP_Category_Summary_Result();
GridView1.DataBind();
GridView1.Visible = true;
ExportTable.Visible = true;
}
//Change the Header Row back to white color
GridView1.HeaderRow.Style.Add("background-color", "#FFFFFF");
GridView1.Style.Add(" font-size", "10px");
//Apply style to Individual Cells
GridView1.HeaderRow.Cells[0].Style.Add("background-color", "green");
GGridView1.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");
GridView1.HeaderRow.Cells[4].Style.Add("background-color", "green");
for (int i = 1; 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");
row.Cells[4].Style.Add("background-color", "#C2D69B");
}
}
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();
}

For printing you can specify special styles using #media print { } block in CSS and initiate printing in browser manually or by calling window.print() in JavaScript.
For export to Excel you can use, for example, http://closedxml.codeplex.com/.
For export to PDF you can use, for example, http://sourceforge.net/projects/itextsharp/.

protected void btnExportToExcel_Click(object sender, EventArgs e)
{
if (RadioButtonList1.SelectedIndex == 0)
{
GridView1.ShowHeader = true;
GridView1.GridLines = GridLines.Both;
GridView1.AllowPaging = false;
GridView1.DataBind();
}
else
{
GridView1.ShowHeader = true;
GridView1.GridLines = GridLines.Both;
GridView1.PagerSettings.Visible = false;
GridView1.DataBind();
}
ChangeControlsToValue(GridView1);
Response.ClearContent();
Response.AddHeader("content-disposition", "attachment; filename=GridViewToExcel.xls");
Response.ContentType = "application/excel";
StringWriter sWriter = new StringWriter();
HtmlTextWriter hTextWriter = new HtmlTextWriter(sWriter);
HtmlForm hForm = new HtmlForm();
GridView1.Parent.Controls.Add(hForm);
hForm.Attributes["runat"] = "server";
hForm.Controls.Add(GridView1);
hForm.RenderControl(hTextWriter);
// Write below code to add cell border to empty cells in Excel file
// If we don't add this line then empty cells will be shown as blank white space
StringBuilder sBuilder = new StringBuilder();
sBuilder.Append("<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:x="urn:schemas-microsoft-com:office:excel" xmlns="http://www.w3.org/TR/REC-html40"> <head><meta http-equiv="Content-Type" content="text/html;charset=windows-1252"><!--[if gte mso 9]><xml><x:ExcelWorkbook><x:ExcelWorksheets><x:ExcelWorksheet><x:Name>ExportToExcel</x:Name><x:WorksheetOptions><x:Panes></x:Panes></x:WorksheetOptions></x:ExcelWorksheet></x:ExcelWorksheets></x:ExcelWorkbook></xml><![endif]--></head> <body>");
sBuilder.Append(sWriter + "</body></html>");
Response.Write(sBuilder.ToString());
Response.End();
}

data transfer gird view to excel sheet

data transfer grid view to excel in asp dot net code is run but blank sheet generate of excel but data is not loaded in excel sheeet how to solve this type of broblem
protected void btnexcel_Click1(object sender, EventArgs e)
{
Response.Clear();
Response.Buffer = true;
Response.AddHeader("content-disposition",
"attachment;filename=ActualsAndBudgets.xls");
Response.Charset = "";
Response.ContentType = "application/ms-excel";
Response.Cache.SetCacheability(HttpCacheability.NoCache);
StringWriter sw = new StringWriter();
HtmlTextWriter htw = new HtmlTextWriter(sw);
gvdetails.AllowPaging = false;
gvdetails.DataBind();
gvdetails.RenderControl(htw);
Response.Write(sw.ToString());
Response.End();
}
public override void VerifyRenderingInServerForm(Control control)
{
}

Check for data in the gridview, your data is not getting binded. So the excel is empty. Debug and check for data inside the gridview. It should work.
Try with this one
Response.Clear();
Response.Buffer = true;
Response.AddHeader("content-disposition",
"attachment;filename=ActualsAndBudgets.xls");
Response.Charset = "";
Response.ContentType = "application/ms-excel";
Response.Cache.SetCacheability(HttpCacheability.NoCache);
StringWriter sw = new StringWriter();
HtmlTextWriter htw = new HtmlTextWriter(sw);
GridView1.RenderControl(htw);
Response.Write(sw.ToString());
Response.End();

may be problem in data binding in export excel .
check that data properly bin to a gridview or not.
Use this code for export grid view in excel sheet and note that you must add iTextSharp dll in you project.
protected void btnExportExcel_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";
StringWriter sw = new StringWriter();
HtmlTextWriter hw = new HtmlTextWriter(sw);
GridView1.AllowPaging = false;
// Re-Bind data to GridView
using (CompMSEntities1 CompObj = new CompMSEntities1())
{
Start = Convert.ToDateTime(txtStart.Text);
End = Convert.ToDateTime(txtEnd.Text);
GridViewSummaryReportCategory.DataSource = CompObj.SP_Category_Summary(Start, End);
SP_Category_Summary_Result obj1 = new SP_Category_Summary_Result();
GridView1.DataBind();
GridView1.Visible = true;
ExportTable.Visible = true;
}
//Change the Header Row back to white color
GridView1.HeaderRow.Style.Add("background-color", "#FFFFFF");
GridView1.Style.Add(" font-size", "10px");
//Apply style to Individual Cells
GridView1.HeaderRow.Cells[0].Style.Add("background-color", "green");
GGridView1.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");
GridView1.HeaderRow.Cells[4].Style.Add("background-color", "green");
for (int i = 1; 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");
row.Cells[4].Style.Add("background-color", "#C2D69B");
}
}
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();
}