C#操作Excel文件(读取Excel，写入Excel)

C#操作Excel文件(读取Excel，写入Excel)

2009-01-09 10:25157690人阅读评论(59)收藏举报
excelc#datasetexceptionstringproperties

看到论坛里面不断有人提问关于读取excel和导入excel的相关问题。闲暇时间将我所知道的对excel的操作加以总结，现在共享大家，希望给大家能够给大家带了一定的帮助。

另外我们还要注意一些简单的问题1.excel文件只能存储65535行数据，如果你的数据大于65535行，那么就需要将excel分割存放了。2.关于乱码，这主要是字符设置问题。

1.加载Excel（读取excel内容）返回值是一个DataSet

[csharp]
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//加载Excel
public static DataSet LoadDataFromExcel(string filePath)

{
try
{
string strConn;
strConn = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + filePath +
";Extended Properties='Excel 8.0;HDR=False;IMEX=1'";

OleDbConnection OleConn = new OleDbConnection(strConn);

OleConn.Open();
String sql = "SELECT * FROM [Sheet1$]";//可是更改Sheet名称，比如sheet2，等等

OleDbDataAdapter OleDaExcel = new OleDbDataAdapter(sql, OleConn);

DataSet OleDsExcle = new DataSet();

OleDaExcel.Fill(OleDsExcle, "Sheet1");

OleConn.Close();
return OleDsExcle;
}
catch (Exception err)
{
MessageBox.Show("数据绑定Excel失败!失败原因：" + err.Message,
"提示信息",
MessageBoxButtons.OK, MessageBoxIcon.Information);

return null;

}
}

//加载Excel
public static DataSet LoadDataFromExcel(string filePath)
{
try
{
string strConn;
strConn = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + filePath + ";Extended Properties='Excel 8.0;HDR=False;IMEX=1'";
OleDbConnection OleConn = new OleDbConnection(strConn);
OleConn.Open();
String sql = "SELECT * FROM  [Sheet1$]";//可是更改Sheet名称，比如sheet2，等等

OleDbDataAdapter OleDaExcel = new OleDbDataAdapter(sql, OleConn);
DataSet OleDsExcle = new DataSet();
OleDaExcel.Fill(OleDsExcle, "Sheet1");
OleConn.Close();
return OleDsExcle;
}
catch (Exception err)
{
MessageBox.Show("数据绑定Excel失败!失败原因：" + err.Message, "提示信息",
MessageBoxButtons.OK, MessageBoxIcon.Information);
return null;
}
}

2.写入Excel内容，参数：excelTable是要导入excel的一个table表

[csharp]
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public static
bool SaveDataTableToExcel(System.Data.DataTable excelTable,
string filePath)
{
Microsoft.Office.Interop.Excel.Application app =

new Microsoft.Office.Interop.Excel.ApplicationClass();

try

{
app.Visible = false;

Workbook wBook = app.Workbooks.Add(true);

Worksheet wSheet = wBook.Worksheets[1]
as Worksheet;
if (excelTable.Rows.Count > 0)

{
int row = 0;

row = excelTable.Rows.Count;
int col = excelTable.Columns.Count;

for (int i = 0; i < row; i++)

{
for (int j = 0; j < col; j++)

{
string str = excelTable.Rows[i][j].ToString();

wSheet.Cells[i + 2, j + 1] = str;
}
}
}

int size = excelTable.Columns.Count;

for (int i = 0; i < size; i++)

{
wSheet.Cells[1, 1 + i] = excelTable.Columns[i].ColumnName;

}
//设置禁止弹出保存和覆盖的询问提示框

app.DisplayAlerts = false;

app.AlertBeforeOverwriting = false;

//保存工作簿

wBook.Save();
//保存excel文件

app.Save(filePath);
app.SaveWorkspace(filePath);
app.Quit();
app = null;

return true;

}
catch (Exception err)

{
MessageBox.Show("导出Excel出错！错误原因：" + err.Message,
"提示信息",
MessageBoxButtons.OK, MessageBoxIcon.Information);

return false;

}
finally
{
}
}

public static bool SaveDataTableToExcel(System.Data.DataTable excelTable, string filePath)
{
Microsoft.Office.Interop.Excel.Application app =
new Microsoft.Office.Interop.Excel.ApplicationClass();
try
{
app.Visible = false;
Workbook wBook = app.Workbooks.Add(true);
Worksheet wSheet = wBook.Worksheets[1] as Worksheet;
if (excelTable.Rows.Count > 0)
{
int row = 0;
row = excelTable.Rows.Count;
int col = excelTable.Columns.Count;
for (int i = 0; i < row; i++)
{
for (int j = 0; j < col; j++)
{
string str = excelTable.Rows[i][j].ToString();
wSheet.Cells[i + 2, j + 1] = str;
}
}
}

int size = excelTable.Columns.Count;
for (int i = 0; i < size; i++)
{
wSheet.Cells[1, 1 + i] = excelTable.Columns[i].ColumnName;
}
//设置禁止弹出保存和覆盖的询问提示框
app.DisplayAlerts = false;
app.AlertBeforeOverwriting = false;
//保存工作簿
wBook.Save();
//保存excel文件
app.Save(filePath);
app.SaveWorkspace(filePath);
app.Quit();
app = null;
return true;
}
catch (Exception err)
{
MessageBox.Show("导出Excel出错！错误原因：" + err.Message, "提示信息",
MessageBoxButtons.OK, MessageBoxIcon.Information);
return false;
}
finally
{
}
}

转载的朋友请一定注明出处谢谢！http://blog.csdn.net/gisfarmer/