我的datagridview列比较了一些数据，并匹配红色的不同颜色或绿色的相同数据。我有个问题。我想将我的datagridview导出到excel文件，但创建的excel文件只包含文本。我想要显示excel报告与datagridview相同 - 绿色或红色的匹配数据。这是我的代码
// comparing data in datagridview
public void Compare()
{
try
{
int rowCount = DataGridView.RowCount;
int colCount = DataGridView.ColumnCount;
string col1,
col2;
int c = 1;
for (int k = 0; k < rowCount - 1; k++)
{
for (int i = 0; i < colCount; i++, c++)
{
col1= Convert.ToString(DataGridView.Rows[k].Cells[0].Value);
col2= Convert.ToString(DataGridView.Rows[k].Cells[1].Value);
for (int j = 0; j < rowCount - 1; j++)
{
string col3= Convert.ToString(DataGridView.Rows[k].Cells[2].Value);
string col4= Convert.ToString(DataGridView.Rows[k].Cells[3].Value);
// comparing data in col1 and col3
if (col1 == col3 && (col1 != "" && col3 != ""))
{
DataGridViewCellStyle CellStyle = new DataGridViewCellStyle();
CellStyle.BackColor = Color.LightGreen;
DataGridView.Rows[k].Cells[0].Style = CellStyle;
DataGridView.Rows[k].Cells[2].Style = CellStyle;
}
else
{
DataGridViewCellStyle CellStyle = new DataGridViewCellStyle();
CellStyle.BackColor = Color.Red;
DataGridView.Rows[k].Cells[0].Style = CellStyle;
DataGridView.Rows[k].Cells[2].Style = CellStyle;
}
// comparing data in col2 and col4
if (col2 == col4 && (col2 != "" && col4 != ""))
{
DataGridViewCellStyle CellStyle = new DataGridViewCellStyle();
CellStyle.BackColor = Color.LightGreen;
DataGridView.Rows[k].Cells[1].Style = CellStyle;
DataGridView.Rows[k].Cells[3].Style = CellStyle;
}
else
{
DataGridViewCellStyle CellStyle = new DataGridViewCellStyle();
CellStyle.BackColor = Color.Red;
DataGridView.Rows[k].Cells[1].Style = CellStyle;
DataGridView.Rows[k].Cells[3].Style = CellStyle;
}
}
}
}
DataGridView.ClearSelection();
}
catch (Exception)
{
}
}
如何将此修改后的datagridview导出为excel。在此先感谢您的帮助
答案 0 :(得分：0)
请尝试以下代码段
gv.HeaderRow.BackColor = System.Drawing.Color.Lavender;
gv.HeaderRow.ForeColor = System.Drawing.Color.Green;
例如
public static void ExportGridView(string fileName, GridView gv, Label header, Label date)
{
HttpContext.Current.Response.Clear();
HttpContext.Current.Response.AddHeader("content-disposition", string.Format("attachment; filename={0}", fileName));
HttpContext.Current.Response.ContentType = "application/ms-excel";
using (StringWriter sw = new StringWriter())
{
using (HtmlTextWriter htw = new HtmlTextWriter(sw))
{
gv.AllowPaging = false;
// Create a table to contain the grid
Table table = new Table();
// include the gridline settings
table.GridLines = gv.GridLines;
gv.Style["font-family"] = "Tahoma";
// add the header row to the table
if (gv.HeaderRow != null)
{
GridViewExportUtil.PrepareControlForExport(gv.HeaderRow);
gv.HeaderRow.BackColor = System.Drawing.Color.Lavender;
gv.HeaderRow.ForeColor = System.Drawing.Color.Green;
table.Rows.Add(gv.HeaderRow);
}
// add each of the data rows to the table
foreach (GridViewRow row in gv.Rows)
{
GridViewExportUtil.PrepareControlForExport(row);
table.Rows.Add(row);
}
// add the footer row to the table
if (gv.FooterRow != null)
{
GridViewExportUtil.PrepareControlForExport(gv.FooterRow);
table.Rows.Add(gv.FooterRow);
}
htw.WriteLine("<br>");
// htw.WriteLine(" ");
if (header.Text != null)
{
header.Font.Size = 15;
header.Font.Bold = true;
header.ForeColor = System.Drawing.Color.Blue;
header.RenderControl(htw);
}
htw.WriteLine("</p>");
// render the table into the htmlwriter
table.RenderControl(htw);
htw.WriteLine("<br>");
htw.WriteLine("Report taken on :", System.Drawing.FontStyle.Bold);
if (date.Text != null)
{
date.ForeColor = System.Drawing.Color.Blue;
date.RenderControl(htw);
}
// render the htmlwriter into the response
HttpContext.Current.Response.Write(sw.ToString());
HttpContext.Current.Response.End();
}
}
}
支持方法是
/// <summary>
/// Replace any of the contained controls with literals
/// </summary>
/// <param name="control"></param>
private static void PrepareControlForExport(Control control)
{
for (int i = 0; i < control.Controls.Count; i++)
{
Control current = control.Controls[i];
if (current is LinkButton)
{
control.Controls.Remove(current);
control.Controls.AddAt(i, new LiteralControl((current as LinkButton).Text));
}
else if (current is ImageButton)
{
control.Controls.Remove(current);
control.Controls.AddAt(i, new LiteralControl((current as ImageButton).AlternateText));
}
else if (current is HyperLink)
{
control.Controls.Remove(current);
control.Controls.AddAt(i, new LiteralControl((current as HyperLink).Text));
}
else if (current is DropDownList)
{
control.Controls.Remove(current);
control.Controls.AddAt(i, new LiteralControl((current as DropDownList).SelectedItem.Text));
}
else if (current is CheckBox)
{
control.Controls.Remove(current);
control.Controls.AddAt(i, new LiteralControl((current as CheckBox).Checked ? "True" : "False"));
}
else if (current is Label)
{
control.Controls.Remove(current);
control.Controls.AddAt(i, new LiteralControl((current as Label).Text));
}
if (current.HasControls())
{
GridViewExportUtil.PrepareControlForExport(current);
}
}
}