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c#, asp.net

Posted on 2013-10-24
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Last Modified: 2013-10-30
The attached code is working. However, we won't know how rows will be returned into
string[] x = new string[?].

For now, I hard code to 3. How can I handle the code without knowing the number of rows in a array?
a.txt
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Question by:solution1368
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8 Comments
 
LVL 75

Expert Comment

by:käµfm³d 👽
ID: 39598932
You could use a List<string> instead. That would get you dynamic addition of items. If you truly need an array in the end, you can simply call the ToArray method of the List class.

e.g.

using System.Collections.Generic;

...

List<string> x = new List<string>();

for (int i = 0; i < dt.Rows.Count; i++)
{
    x.Add(dt.Rows[i]["ViewName"].ToString());
}

// If you need an array
string[] y = x.ToArray();

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Author Comment

by:solution1368
ID: 39598968
can you change the codes based on my codes? and more importantly, how to call the function in the front end?
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LVL 75

Expert Comment

by:käµfm³d 👽
ID: 39598980
At Top Of Code File
using System.Collections.Generic;

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public string[] GetBondViewList(string stateCode, string classSubCodeName, int statusID)
       {
           DbCommand com = GenericDataAccess.CreateCommand();
           com.CommandText = "GetBondViewUI";
           DbParameter param = com.CreateParameter();
           //==============================================
           param.ParameterName = "@StateCode";
           param.Value = stateCode;
           param.DbType = DbType.String;
           com.Parameters.Add(param);
           //===============================================   
           param = com.CreateParameter();
           param.ParameterName = "@classSubCodeName";
           param.Value = classSubCodeName;
           param.DbType = DbType.String;
           com.Parameters.Add(param);
           //===============================================           
           param = com.CreateParameter();
           param.ParameterName = "@StatusID";
           param.Value = 1;
           param.DbType = DbType.Int16;
           com.Parameters.Add(param);
           //===============================================
           DataTable dt = GenericDataAccess.ExecuteSelectCommand(com);
           if (dt.Rows.Count > 0)
           {
               List<string> y = new List<string>();

               for (int i = 0; i < dt.Rows.Count; i++)
               {
                   y.Add(dt.Rows[i]["ViewName"].ToString());
               }

               return y.ToArray();
           }
           else
           {
               return null;
           }
       }
    }

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Front End
string[] result = GetBondViewList("some code", string "some sub code", 1);

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Author Comment

by:solution1368
ID: 39598992
frontend. it is string array. like string[0] = something1 string[1] = something2...how to do that?
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LVL 75

Expert Comment

by:käµfm³d 👽
ID: 39599023
I do not understand the question.
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Author Comment

by:solution1368
ID: 39599052
string[] result = GetBondViewList("some code", string "some sub code", 1);

how to call them in an array?
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LVL 75

Accepted Solution

by:
käµfm³d   👽 earned 2000 total points
ID: 39599144
Your GetBondViewList method will return an array, so if you are asking how to inspect the values that it returns, then you can do something like:

string[] result = GetBondViewList("some code", string "some sub code", 1);

if (result != null)
{
    for (int i = 0; i < result.Length; i++)
    {
        Console.WriteLine(result[i]);
    }
}

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Author Closing Comment

by:solution1368
ID: 39613178
Thanks. this for loop is working okay.
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