Array declaration in C# from a Service Class

Question

I have a array type something like this

ZData and this array has a field called "field1"

I am trying to declare something like

ZData data1= new Zdata[]{}
data1[0].field1="12345"

The above code throws me a index out of bounds exception error but it builds successfully

This is a predefined array with only one field and I have to pass this array to an method

 [System.Runtime.Serialization.DataContractAttribute(Name="ZData", Namespace="http://schemas.datacontract.org/2004/07/csservice.data")]
[System.SerializableAttribute()]
public partial class ZData : object, System.Runtime.Serialization.IExtensibleDataObject, System.ComponentModel.INotifyPropertyChanged {

    [System.NonSerializedAttribute()]
    private System.Runtime.Serialization.ExtensionDataObject extensionDataField;

    private string Field1Field;

    [global::System.ComponentModel.BrowsableAttribute(false)]
    public System.Runtime.Serialization.ExtensionDataObject ExtensionData {
        get {
            return this.extensionDataField;
        }
        set {
            this.extensionDataField = value;
        }
    }

    [System.Runtime.Serialization.DataMemberAttribute(IsRequired=true)]
    public string Field1 {
        get {
            return this.Field1Field;
        }
        set {
            if ((object.ReferenceEquals(this.Field1Field, value) != true)) {
                this.Field1Field = value;
                this.RaisePropertyChanged("Field1Field");
            }
        }
    }

Blorgbeard · Accepted Answer · 2016-08-30 01:44:44Z

2

ZData data1 = new Zdata[]{} declares an empty array - there are no elements.

So, data1[0], referring to the first element, is out of bounds.

Instead, declare the length of your array:

ZData data1 = new ZData[1];     // length 1

Note that, unless ZData is a struct, you also have to instantiate every array entry before using it:

data1[0] = new ZData();
data1[0].field1 = "12345";

Alternatively, use a List<T> instead of an array, and you won't have to declare the length up front:

List<ZData> data1 = new List<ZData>();
data1.Add(new ZData() { field1 = "12345" });

answered Aug 30, 2016 at 1:44

Blorgbeard

104k50 gold badges237 silver badges276 bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

Array declaration in C# from a Service Class

1 Answer 1

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Related