本文整理汇总了C#中DbHelper.GetField方法的典型用法代码示例。如果您正苦于以下问题：C# DbHelper.GetField方法的具体用法？C# DbHelper.GetField怎么用？C# DbHelper.GetField使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类DbHelper的用法示例。
在下文中一共展示了DbHelper.GetField方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C#代码示例。
示例1: UpdateCount
/// <summary>
/// Recalculate the # of invalid FKs
/// </summary>
/// <param name="db"></param>
public void UpdateCount(DbHelper db)
{
// note, since we are looking at the relationship from the M:1 side, the "Child Table" is actually the "1" side (which would correspond to the parent
// side in a diagram)
try
{
this.ErrorCount = (int)db.GetField("count(*)", _parentTable,
String.Format("{0} is not null and {0} not in (select {1} from {2} where {1} is not null)", _parentField, _childField, _childTable));
}
catch (Exception x)
{
Error = x.Message;
}
}示例2: CheckConnection
/// <summary>
/// Check validity of the connection asynchronously.
/// </summary>
private void CheckConnection()
{
SlxConnectionInfo con = SelectedConnection;
lock (_validationErrors)
{
if (con == null)
{
_validationErrors["SelectedConnection"] = "Please select connection";
}
else
{
ThreadPool.QueueUserWorkItem(delegate
{
lock (_validationErrors)
{
DbHelper db = new DbHelper(SelectedConnection.BuildConnectionString(Password));
try
{
db.GetField("1", "SYSTEMINFO", "");
if (_validationErrors.ContainsKey("SelectedConnection"))
_validationErrors.Remove("SelectedConnection");
}
catch (Exception x)
{
_validationErrors["SelectedConnection"] = "Failed to connect: " + x.Message;
}
OnPropertyChanged("SelectedConnection");
}
});
}
}
}