swich case 应输入常量错误问题

Question

    //POColor.Me.TableName是一个变量来的,我这样用提示应输入常量的错误,如何解决,谢谢!
    foreach (string s in TableName)
            {
                switch(s)
                {
                    case POColor.Me.TableName:
                        allColumnName.Add(POColor.Me.TableName, poColorColumnName);
                        break;
                    case PODetail.Me.TableName:
                        allColumnName.Add(PODetail.Me.TableName, poDetailColumnName);
                        break;
                    case POTitle.Me.TableName:
                        allColumnName.Add(POTitle.Me.TableName, poTitleColumnName);
                        break;
                    case ManuPlanTB.Me.TableName:
                        allColumnName.Add(ManuPlanTB.Me.TableName, manuPlanTBColumnName);
                        break;
                    case Agent.Me.TableName:
                        allColumnName.Add(Agent.Me.TableName, agentColumnName);
                        break;
                    case Customer.Me.TableName:
                        allColumnName.Add(Customer.Me.TableName, customerColumnName);
                        break;
                }
            }

Answer 1

不是说的很清楚么
要用常量
不能用变量你可以把这几个TableName定义一个枚举

Answer 2

 case 后面一定要是常量

Answer 3

 foreach (string s in TableName)
            {
                switch(s)
                {
                    case "name1":
                        allColumnName.Add(POColor.Me.TableName, poColorColumnName);
                        break;
                    case "name2":
                        allColumnName.Add(PODetail.Me.TableName, poDetailColumnName);
                        break;
                }
            }switch
之支持常量
或者是枚举
不支持变量

Answer 4

case "POColor.Me.TableName":
                        allColumnName.Add(POColor.Me.TableName, poColorColumnName);
                        break;

Answer 5

foreach (string s in TableName)
            {
                switch(s)
                {
                    case "POColor.Me.TableName":
                        allColumnName.Add(POColor.Me.TableName, poColorColumnName);
                        break;
                    case "PODetail.Me.TableName":
                        allColumnName.Add(PODetail.Me.TableName, poDetailColumnName);
                        break;
                    case "POTitle.Me.TableName":
                        allColumnName.Add(POTitle.Me.TableName, poTitleColumnName);
                        break;
                    case "ManuPlanTB.Me.TableName":
                        allColumnName.Add(ManuPlanTB.Me.TableName, manuPlanTBColumnName);
                        break;
                    case "Agent.Me.TableName":                        allColumnName.Add(Agent.Me.TableName, agentColumnName);
                        break;
                    case "Customer.Me.TableName":
                        allColumnName.Add(Customer.Me.TableName, customerColumnName);
                        break;
                }
            }