如何在动态生成的文本框中添加必需的字段验证器 [英] How to add a required field validator in my dynamically generated textboxes
问题描述
嗨每一个,
如何在动态生成的文本框中添加必填字段验证器?请帮忙。
我的代码是
Hi Every one,
How to add a required field validator in my dynamically generated textboxes? Please help.
My code is
protected void Button1_Click(object sender, EventArgs e)
{
if (txtQuantity.Text != "")
{
for (int i = 0; i <= Convert.ToInt16(txtQuantity.Text) / 3; i++)
{
Label la = new Label();
la.Text = ddlProductName.SelectedItem.Value + (i+1).ToString();
la.ID = "abc1" + i;
PlaceHolder1.Controls.Add(la);
//la = FindControl(String.Format(i)) as Label;
TextBox txtbox = new TextBox();
// txtbox.Text = "Textbox - " + i.ToString();
PlaceHolder1.Controls.Add(new LiteralControl("<input id='txt' name='Textbox" + i + "'type='text' />"));
PlaceHolder1.Controls.Add(new LiteralControl("<br />"));
//RequiredFieldValidator val = new RequiredFieldValidator();
//TextBox txt = PlaceHolder1.FindControl("<input id='txt' name='Textbox" + i + "'type='text' />") as TextBox;
//val.ControlToValidate = txt.Text;
//val.ErrorMessage = "Enter serial No";
//PlaceHolder1.Controls.Add(val);
}
for (int j = (Convert.ToInt16(txtQuantity.Text) / 3)+1 ; j <= Convert.ToInt16(txtQuantity.Text)*2/3; j++)
{
Label la1 = new Label();
la1.Text = ddlProductName.SelectedItem.Value + (j+1).ToString();
la1.ID = "abc2" + j;
PlaceHolder2.Controls.Add(la1);
//la = FindControl(String.Format(i)) as Label;
TextBox txtbox1 = new TextBox();
// txtbox.Text = "Textbox - " + i.ToString();
PlaceHolder2.Controls.Add(new LiteralControl("<input id='txt' name='Textbox" + j + "'type='text' />"));
PlaceHolder2.Controls.Add(new LiteralControl("<br />"));
//RequiredFieldValidator val = new RequiredFieldValidator();
//val.ControlToValidate = "<input id='txt' name='Textbox" + j + "'type='text' />";
//val.ErrorMessage = "Enter serial No";
//PlaceHolder2.Controls.Add(val);
}
for (int k = (Convert.ToInt16(txtQuantity.Text)*2/3)+1; k < Convert.ToInt16(txtQuantity.Text) ; k++)
{
Label la2 = new Label();
la2.Text = ddlProductName.SelectedItem.Value + (k + 1).ToString();
la2.ID = "abc3" + k;
PlaceHolder3.Controls.Add(la2);
//la = FindControl(String.Format(i)) as Label;
TextBox txtbox1 = new TextBox();
// txtbox.Text = "Textbox - " + i.ToString();
PlaceHolder3.Controls.Add(new LiteralControl("<input id='txt' name='Textbox" + k + "'type='text' />"));
PlaceHolder3.Controls.Add(new LiteralControl("<br />"));
}
}
}
推荐答案
只看到下面的演示代码,用于举例说明和编辑代码。这是在文本框中动态添加 requiredfield validation 的示例。
Just see the following demo code which is done to give one example and edit your code. This is a example for to add dynamically requiredfield validation in textbox.
protected void Page_Load(object sender, EventArgs e)
{
for (int i = 0; i < 2; i++)
{
TextBox txt = new TextBox();
txt.ID = "txt" + i;
Panel1.Controls.Add(txt);
RequiredFieldValidator rfv = new RequiredFieldValidator();
rfv.ID = "rfv" + i;
rfv.ControlToValidate = "txt" + i;
rfv.ErrorMessage = "should not blank";
Panel1.Controls.Add(rfv);
}
}
当你动态添加所需的Fieldvalidator时。它会抛出错误: WebForms UnobtrusiveValidationMode需要一个用于jQuery的ScriptResourceMapping ;
我们将以不同的方式解决这个问题:
第一种情况:
在web.config文件中添加以下代码。
When you will add required Fieldvalidator dynamically. it will throw error :" WebForms UnobtrusiveValidationMode requires a ScriptResourceMapping for jQuery ";
We will resolve this on different way:
First case:
Add below code inside web.config file.
<configuration>
<appsettings>
<add key="ValidationSettings:UnobtrusiveValidationMode" value="None" />
</appsettings>
</configuration>
或第二个案例
在Application_start事件中的Global.asax文件中添加此代码
OR Second Case
Add this code in Global.asax file inside Application_start event
void Application_Start(object sender, EventArgs e)
{
// Code that runs on application startup
ScriptManager.ScriptResourceMapping.AddDefinition("jquery", new ScriptResourceDefinition
{
Path = "~/scripts/jquery-1.4.1.min.js",
DebugPath = "~/scripts/jquery-1.4.1.js",
CdnPath = "http://ajax.microsoft.com/ajax/jQuery/jquery-1.4.1.min.js",
CdnDebugPath = "http://ajax.microsoft.com/ajax/jQuery/jquery-1.4.1.js"
});
}
使用第一种情况或第二种情况中的任何一种都可以。
我希望这对你有很大的帮助
Use any one of First case or second case it will work.
I hope this will help you very much
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