27.3.2.4.3 GetTagNumber

 

Get the total number of tags within the current system tag list of current active project node.

 

Syntax

viewdll.dll

int VD_API VdGetTagNo();

Bwdllobj

Public Function GetTagNumber() As Integer

C#

Integer GetTagNumber();

 

Parameters

None.

 

Return Value

Type: Integer

Return the total number of tags within the current system tag list of current active project node.

 

Remarks

 

C# Sample Code

private void tbGetTagList_Click(object sender, EventArgs e)

{

    int start = 0;

    int num = ViewDllWrap.GetTagNumber();

    Array tagList = ViewDllWrap.GetTagList(start, num);

    if(num == 0)

    {

        MessageLog("Tag list is empty.");

    }

    else if (num > 0)

    {

        MessageLog("There has " + num.ToString() + " tags.");

    }

    lbTagName.Items.Clear();

    foreach (string a in tagList)

    {

        lbTagName.Items.Add(a);

    }

}