Question

怎样判断数据表DataTable中是否包含指定的值

Answer 1

// <summary>
/// 判断DataTale中判断某个字段中包含某个数据
/// </summary>
/// <param name="dt"></param>
/// <param name="columnName"></param>
/// <param name="fieldData"></param>
/// <returns></returns>
public static Boolean IsColumnIncludeData(DataTable dt, String columnName, string fieldData)
{
if(dt==null)
{
return false;
}
else
{
DataRow[] dataRows = dt.Select(columnName+"='"+fieldData+"'");
if (dataRows.Length.Equals(1))
{
return true;
}
else
{
return false;
}
}

}