//将int类型的字段改为string类型
DataTable dtResult = new DataTable();
dtResult = dt.Clone();
foreach (DataColumn col in dtResult.Columns)
{
col.DataType = typeof(String);
}
for (int i = 0; i < dt.Rows.Count ; i++)
{
DataRow rowNew = dtResult.NewRow();
for (int j = 0; j < dt.Columns.Count ; j++)
{
if (Convert.ToInt32(dt.Rows[i][j]) == 0)
{
rowNew[j] = "不开考";
}
else if (Convert.ToInt32(dt.Rows[i][j]) == 1)
{
rowNew[j] = "开考";
}
}
dtResult.Rows.Add(rowNew);
}