会话相关的语法是否正确 [英] is it correct syntax for session Related

问题描述

if (!IsPostBack) {
			con.Open();
			cmd.Connection = con;

			for (j = 0; j <= Session.Keys.Count - 1; j++) {
				  a[j]=Session.Keys[j];

			}

我在Line下面得到了错误；
a [j] = Session.Keys [j];

异常详细信息:System.IndexOutOfRangeException:位置1没有行.

源错误:


第39行:标签l =默认值(标签);
第40行:l =(标签)v.FindControl("Label1");
第41行:l.Text = dt.Rows [ctr] ["Serial"] +.";
第42行:l =(标签)v.FindControl("Label2");
第43行:dt.Rows [ctr] ["question"] = l.Text;


源文件:e:\ Documents and Settings \ Administrator \ My Documents \ Visual Studio 2010 \ WebSites \ Subbu \ WebSite6 \ Default2.aspx.cs行:41

我在行下出现错误

l.Text = dt.Rows [ctr] ["Serial"] +.";

I got the error below Line;
a[j]=Session.Keys[j];

Exception Details: System.IndexOutOfRangeException: There is no row at position 1.

Source Error:


Line 39: Label l = default(Label);
Line 40: l = (Label)v.FindControl("Label1");
Line 41: l.Text = dt.Rows[ctr]["Serial"] + ".";
Line 42: l = (Label)v.FindControl("Label2");
Line 43: dt.Rows[ctr]["question"]=l.Text ;


Source File: e:\Documents and Settings\Administrator\My Documents\Visual Studio 2010\WebSites\Subbu\WebSite6\Default2.aspx.cs Line: 41

i got Error below line

l.Text = dt.Rows[ctr]["Serial"] + ".";

推荐答案

数组a[]应该与，请先检查.

The array a[] should be as big as the Session.Keys, check that first.

第一个错误的解决方法:

您是否正确定义了a?我使用以下语法尝试了您的代码，并且该代码运行时没有任何错误.

Resolution for First Error:

Have you defined a properly? I tried your code with below syntax and it runs without any Error.

try
{
    string[] a = new string[]{};

    for (int j = 0; j <= Session.Keys.Count - 1; j++)
    {
        a[j] = Session.Keys[j];

    }
}
catch (Exception ex)
{
    string error = ex.Message;
}

第二个错误的解决方案:

调试代码并检查dt的值，该值不应为null.还要检查您从dt.Rows[ctr]["Serial"]获得的价值.

Resolution for Second Error:

Debug your code and check value of dt, it should not be null. Also check what value you are getting from dt.Rows[ctr]["Serial"].

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