C# DataGridView直接导出EXCEL 的两种方法

DataGridView直接导出EXCEL

1.直接将DataGridView显示的内容导出Excel

public void DataToExcel(DataGridView m_DataView)
{
SaveFileDialog kk = new SaveFileDialog();
kk.Title = "保存EXECL文件";
kk.Filter = "EXECL文件(*.xls) |*.xls |所有文件(*.*) |*.*";
kk.FilterIndex = 1;
if (kk.ShowDialog() == DialogResult.OK)
{
string FileName = kk.FileName + ".xls";
if (File.Exists(FileName))
File.Delete(FileName);
FileStream objFileStream;
StreamWriter objStreamWriter;
string strLine = "";
objFileStream = new FileStream(FileName, FileMode.OpenOrCreate, FileAccess.Write);
objStreamWriter = new StreamWriter(objFileStream, System.Text.Encoding.Unicode);
for (int i = 0; i < m_DataView.Columns.Count; i++)
{
if (m_DataView.Columns[i].Visible == true)
{
strLine = strLine + m_DataView.Columns[i].HeaderText.ToString() + Convert.ToChar(9);
}
}
objStreamWriter.WriteLine(strLine);
strLine = "";

for (int i = 0; i < m_DataView.Rows.Count; i++)
{
if (m_DataView.Columns[0].Visible == true)
{
if (m_DataView.Rows[i].Cells[0].Value == null)
strLine = strLine + " " + Convert.ToChar(9);
else
strLine = strLine + m_DataView.Rows[i].Cells[0].Value.ToString() + Convert.ToChar(9);
}
for (int j = 1; j < m_DataView.Columns.Count; j++)
{
if (m_DataView.Columns[j].Visible == true)
{
if (m_DataView.Rows[i].Cells[j].Value == null)
strLine = strLine + " " + Convert.ToChar(9);
else
{
string rowstr = "";
rowstr = m_DataView.Rows[i].Cells[j].Value.ToString();
if (rowstr.IndexOf("\r\n") > 0)
rowstr = rowstr.Replace("\r\n", " ");
if (rowstr.IndexOf("\t") > 0)
rowstr = rowstr.Replace("\t", " ");
strLine = strLine + rowstr + Convert.ToChar(9);
}
}
}
objStreamWriter.WriteLine(strLine);
strLine = "";
}
objStreamWriter.Close();
objFileStream.Close();
MessageBox.Show(this,"保存EXCEL成功","提示",MessageBoxButtons.OK,MessageBoxIcon.Information);
}
}

2.用DataGridView绑定的DataTable为参数,导出Excel

public void DataToExcel(DataTable m_DataTable)
{
SaveFileDialog kk = new SaveFileDialog();
kk.Title = "保存EXECL文件";
kk.Filter = "EXECL文件(*.xls) |*.xls |所有文件(*.*) |*.*";
kk.FilterIndex = 1;
if (kk.ShowDialog() == DialogResult.OK)
{
string FileName = kk.FileName + ".xls";
if (File.Exists(FileName))
File.Delete(FileName);
FileStream objFileStream;
StreamWriter objStreamWriter;
string strLine = "";
objFileStream = new FileStream(FileName, FileMode.OpenOrCreate, FileAccess.Write);
objStreamWriter = new StreamWriter(objFileStream, System.Text.Encoding.Unicode);
for (int i = 0; i < m_DataTable.Columns.Count; i++)
{
strLine = strLine + m_DataTable.Columns[i].Caption.ToString() + Convert.ToChar(9);
}
objStreamWriter.WriteLine(strLine);
strLine = "";

for (int i = 0; i < m_DataTable.Rows.Count; i++)
{
for (int j = 0; j < m_DataTable.Columns.Count; j++)
{
if (m_DataTable.Rows[i].ItemArray[j] == null)
strLine = strLine + " " + Convert.ToChar(9);
else
{
string rowstr = "";
rowstr = m_DataTable.Rows[i].ItemArray[j].ToString();
if (rowstr.IndexOf("\r\n") > 0)
rowstr = rowstr.Replace("\r\n", " ");
if (rowstr.IndexOf("\t") > 0)
rowstr = rowstr.Replace("\t", " ");
strLine = strLine + rowstr + Convert.ToChar(9);
}
}
objStreamWriter.WriteLine(strLine);
strLine = "";
}
objStreamWriter.Close();
objFileStream.Close();
MessageBox.Show(this, "保存EXCEL成功", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
}