Question

如何在页面中获取所有requiredfieldvalidator并更改其errormessage？

我尝试使用下面的代码，但它会更改所有验证程序，包括regularexpressionvalidator。

library(ggplot2)
g <- function(mua=1.2){
  mu0=0

  g1<-ggplot(data.frame(x=c(-4.5, 4.5)), 
         aes(x)
  ) + 
    stat_function(fun=dnorm,args = list(mean=mu0), size = 1) + 
    stat_function(fun=dnorm,args = list(mean=mua), size = 1) + 
    geom_area(stat = "function", fun = dnorm,args=list(mean=mua), fill = "red", 
              xlim = c(qnorm(1-0.025,mean = mu0), 5), 
              alpha = 0.4) +
    annotate(geom = "text",x=mu0,y=0,label="mu0") +
    annotate(geom = "text",x=mua,y=0,label="mua") +
    annotate(geom = "text",x=qnorm(1-0.025,mean = mu0),
             y=0,label=round(qnorm(1-0.025,mean = mu0),2))
  g1
}

plots1 <- vector("list", 6)
index=1
for(i in seq(0,2.5,by=0.5)){
  plots1[[index]]=g(i)
  index=index+1
}
plots1[[6]]=ggplot()

library(grid)
grobs1 = lapply(plots1, ggplotGrob)

row1 = do.call(cbind, c(grobs1[1:3], size="first"))
row2 = do.call(cbind, c(grobs1[4:6], size="first"))
grid1 = do.call(rbind,c(list(row1,row2), size="first"))
grid.newpage()
grid.draw(grid1)

Answer 1

使用如下代码，其中验证器集合是通过Page对象的Page.Validators属性获得的。此外，您需要使用下面的代码段中的if语句检查循环验证器是否为RequiredFieldValidator。

foreach (IValidator validator in Page.Validators)
{

    BaseValidator bv = (validator as BaseValidator);
    //check if validator is a RequiredFieldValidator
    if(bv is RequiredFieldValidator) {
      bv.CssClass = "Error";
      bv.Display = ValidatorDisplay.Dynamic;
      bv.Text = "* Error Message!";
    }
}

如果您使用Page.GetValidators(null)，那么它仅为默认验证组提供验证器，即所有未指定验证组的验证器。这将排除已分配验证组的验证器。

如何获取页面中的所有RequiredFieldValidator

1 个答案: