的TableRow造型为导出到Excel [英] TableRow styling for Export To Excel
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问题描述
我有以下，我使用导出到Excel的GridView的code。我加入了gridview的行成System.Web.UI.WebControls.Table。现在，我需要将背景颜色应用到导出的Excel表头和数据行（有两个标题行）。
I have following code that I am using for export to excel of a gridview. I am adding the gridview rows into System.Web.UI.WebControls.Table. Now, I need to apply background color to the header and data rows in the exported excel (There are two header rows).
我累了下面。它不提供所需的结果。
I tired the following. It is not providing the desired result.
目前解决的问题
- 一个标题行，没有背景颜色
- 着色施加于不具有数据单元（细胞的H，I，等等。）
我们如何纠正？
请注意：我想了解的导出功能。所以，请不建议使用任何第三方控件。我只是探索这一做法的所有功能。
Note: I am trying to learn the export feature. So, please don't suggest to use any third party controls. I am just exploring all features of this approach.
我加入分组头使用以下code原gridview的。
I am adding the header grouping to the original gridview using following code.
protected void gvCustomers_RowCreated(object sender, GridViewRowEventArgs e)
{
if (e.Row.RowType == DataControlRowType.Header)
{
System.Text.StringBuilder sbNewHeader = new StringBuilder();
sbNewHeader.AppendFormat(" </th>" +
"<th colspan='2' class='tableColGroupAssociate'>Associate Info <a href='#' class='associateHide'> Hide </a> </th>" +
"<th colspan='2' class='tableColGroupTransaction'>Financial Info <a href='#' class='financialHide'> Hide </a> </th>" +
"<th colspan='2' class='tableColGroupDailyTax'>Tax Info <a href='#' class='dailyTaxHide'> Hide </a> </th>"
+ "</tr>");
sbNewHeader.AppendFormat("<tr class='{0}'><th>{1}", this.gvCustomers.HeaderStyle.CssClass, e.Row.Cells[0].Text);
e.Row.Cells[0].Text = sbNewHeader.ToString();
}
}
完成code
public static void Export(GridView gv)
{
HttpContext.Current.Response.Clear();
HttpContext.Current.Response.AddHeader("content-disposition", string.Format("attachment; filename={0}", "MyExcelFile.xls"));
HttpContext.Current.Response.ContentType = "application/ms-excel";
using (StringWriter stringWriter = new StringWriter())
{
using (HtmlTextWriter tetxWriter = new HtmlTextWriter(stringWriter))
{
System.Web.UI.WebControls.Table tableControl = new Table();
tableControl.GridLines = gv.GridLines;
//Before the next step - we can remove any controls inside the gridview and replace with literal control
// Add the header row to the table
if (gv.HeaderRow != null)
{
TableRow tableRow = gv.HeaderRow;
tableRow.Style[System.Web.UI.HtmlTextWriterStyle.BackgroundColor] = "Orange";
tableControl.Rows.Add(gv.HeaderRow);
}
// Add each of the data rows to the table
foreach (GridViewRow row in gv.Rows)
{
TableRow tableRow = row;
tableRow.Style[System.Web.UI.HtmlTextWriterStyle.BackgroundColor] = "Yellow";
tableControl.Rows.Add(row);
}
// Render the table into the htmlwriter
tableControl.RenderControl(tetxWriter);
// Render the htmlwriter into the response
HttpContext.Current.Response.Write(stringWriter.ToString());
HttpContext.Current.Response.End();
}
}
}
修改
根据从ANKIT评论，我尝试以下;仍然没有达到预期的结果。
Based on comment from Ankit, I tried the following; still the result is not as expected.
if (gv.HeaderRow != null)
{
TableRow tableRow = gv.HeaderRow;
foreach (TableCell cell in tableRow.Cells)
{
cell.Style[System.Web.UI.HtmlTextWriterStyle.BackgroundColor] = "Orange";
}
tableControl.Rows.Add(gv.HeaderRow);
}
推荐答案
我想出一个办法做到这一点......对于其他人的利益，我将它张贴在这里：
I figured a way to do it... For the benefit of others I will post it here:
参考文献：
- ASP.NET Excel export encoding problem
其他注意事项：当创建一个新的表TableSection可以用来定义标题
Other Note: When a new Table is created TableSection can be used to define header
newRow.TableSection = TableRowSection.TableHeader;
code
//改变用于添加动态标题为HTML渲染的逻辑：
//Changed the logic used for adding dynamic header for HTML rendering:
protected void gvCustomers_RowCreated(object sender, GridViewRowEventArgs e)
{
if (e.Row.RowType == DataControlRowType.Header)
{
GridViewRow newHeaderRow = new GridViewRow(-1, -1, DataControlRowType.Header, DataControlRowState.Normal);
TableCell cell1 = new TableHeaderCell();
cell1.ColumnSpan = 1; //e.Row.Cells.Count;
cell1.Text = "";
TableCell cell2 = new TableCell();
cell2.ColumnSpan = 2;
cell2.Text = "One";
TableCell cell3 = new TableCell();
cell3.ColumnSpan = 2;
cell3.Text = "Two";
TableCell cell4 = new TableCell();
cell4.ColumnSpan = 2;
cell4.Text = "Three";
newHeaderRow.Cells.Add(cell1);
newHeaderRow.Cells.Add(cell2);
newHeaderRow.Cells.Add(cell3);
newHeaderRow.Cells.Add(cell4);
((GridView)sender).Controls[0].Controls.AddAt(0, newHeaderRow);
}
if (e.Row.RowType == DataControlRowType.Header)
{
//System.Text.StringBuilder sbNewHeader = new StringBuilder();
//sbNewHeader.AppendFormat(" </th>" +
// "<th colspan='2' class='tableColGroupAssociate'>Associate Info <a href='#' class='associateHide'> Hide </a> </th>" +
// "<th colspan='2' class='tableColGroupTransaction'>Financial Info <a href='#' class='financialHide'> Hide </a> </th>" +
// "<th colspan='2' class='tableColGroupDailyTax'>Tax Info <a href='#' class='dailyTaxHide'> Hide </a> </th>"
// + "</tr>");
//sbNewHeader.AppendFormat("<tr class='{0}'><th>{1}", this.gvCustomers.HeaderStyle.CssClass, e.Row.Cells[0].Text);
//e.Row.Cells[0].Text = sbNewHeader.ToString();
}
}
//输出逻辑 - 应用类似的逻辑再次
//Export Logic - Applied similar logic once again
public static void Export(GridView gv)
{
HttpContext.Current.Response.Clear();
HttpContext.Current.Response.AddHeader("content-disposition", string.Format("attachment; filename={0}", "MyExcelFile.xls"));
HttpContext.Current.Response.ContentType = "application/ms-excel";
//Response.ContentEncoding = System.Text.Encoding.Unicode;
//Response.BinaryWrite(System.Text.Encoding.Unicode.GetPreamble());
using (StringWriter stringWriter = new StringWriter())
{
using (HtmlTextWriter tetxWriter = new HtmlTextWriter(stringWriter))
{
System.Web.UI.WebControls.Table tableControl = new Table();
tableControl.GridLines = gv.GridLines;
// Add the header row to the table
if (gv.HeaderRow != null)
{
ReplaceControlForExport(gv.HeaderRow);
#region Dynamic Frrst Header Row
TableRow newRow = new TableRow();
TableCell cell1 = new TableHeaderCell();
cell1.ColumnSpan = 1;
cell1.Text = "";
TableCell cell2 = new TableCell();
cell2.ColumnSpan = 2;
cell2.Text = "One";
TableCell cell3 = new TableCell();
cell3.ColumnSpan = 2;
cell3.Text = "Two";
TableCell cell4 = new TableCell();
cell4.ColumnSpan = 2;
cell4.Text = "Three";
newRow.Cells.Add(cell1);
newRow.Cells.Add(cell2);
newRow.Cells.Add(cell3);
newRow.Cells.Add(cell4);
foreach (TableCell cell in newRow.Cells)
{
cell.Style[System.Web.UI.HtmlTextWriterStyle.BackgroundColor] = "Purple";
}
tableControl.Rows.Add(newRow);
#endregion
TableRow originalHeaderRow = gv.HeaderRow;
foreach (TableCell cell in originalHeaderRow.Cells)
{
cell.Style[System.Web.UI.HtmlTextWriterStyle.BackgroundColor] = "Orange";
}
tableControl.Rows.Add(originalHeaderRow);
}
// Add each of the data rows to the table
foreach (GridViewRow row in gv.Rows)
{
ReplaceControlForExport(row);
TableRow tableRow = row;
foreach (TableCell cell in tableRow.Cells)
{
cell.Style[System.Web.UI.HtmlTextWriterStyle.BackgroundColor] = "Yellow";
}
tableControl.Rows.Add(row);
}
// Render the table into the htmlwriter
tableControl.RenderControl(tetxWriter);
// Render the htmlwriter into the response
HttpContext.Current.Response.Write(stringWriter.ToString());
HttpContext.Current.Response.End();
}
}
}
private static void ReplaceControlForExport(Control mainControlElement)
{
for (int i = 0; i < mainControlElement.Controls.Count; i++)
{
Control currentControl = mainControlElement.Controls[i];
if (currentControl is LinkButton)
{
mainControlElement.Controls.Remove(currentControl);
mainControlElement.Controls.AddAt(i, new LiteralControl((currentControl as LinkButton).Text));
}
else if (currentControl is ImageButton)
{
mainControlElement.Controls.Remove(currentControl);
mainControlElement.Controls.AddAt(i, new LiteralControl((currentControl as ImageButton).AlternateText));
}
else if (currentControl is HyperLink)
{
mainControlElement.Controls.Remove(currentControl);
mainControlElement.Controls.AddAt(i, new LiteralControl((currentControl as HyperLink).Text));
}
else if (currentControl is DropDownList)
{
mainControlElement.Controls.Remove(currentControl);
mainControlElement.Controls.AddAt(i, new LiteralControl((currentControl as DropDownList).SelectedItem.Text));
}
else if (currentControl is CheckBox)
{
mainControlElement.Controls.Remove(currentControl);
mainControlElement.Controls.AddAt(i, new LiteralControl((currentControl as CheckBox).Checked ? "True" : "False"));
}
//Recursive Call
if (currentControl.HasControls())
{
ReplaceControlForExport(currentControl);
}
}
}
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