babalae/better-genshin-impact · error · ArgumentException

参数ItemName和ItemNames不能同时为空

Error message

参数ItemName和ItemNames不能同时为空

What it means

Thrown as ArgumentException by CountInventoryItemParam.Validate when both ItemName and ItemNames are empty/whitespace. The task needs at least one item name to count; providing none means there is nothing to do and indicates a caller error.

Source

Thrown at BetterGenshinImpact/GameTask/Common/Job/CountInventoryItemParam.cs:50

    public void Validate()
    {
        ItemNames ??= [];
        bool hasItemName = !string.IsNullOrWhiteSpace(ItemName);
        bool hasItemNames = ItemNames.Count > 0;
        if (!hasItemName)
        {
            ItemName = null;
        }

        if (hasItemName && hasItemNames)
        {
            throw new ArgumentException($"参数{nameof(ItemName)}和{nameof(ItemNames)}不能同时使用");
        }

        if (!hasItemName && !hasItemNames)
        {
            throw new ArgumentException($"参数{nameof(ItemName)}和{nameof(ItemNames)}不能同时为空");
        }

        if (ItemNames.Any(string.IsNullOrWhiteSpace))
        {
            throw new ArgumentException($"参数{nameof(ItemNames)}不能包含空名称");
        }
    }
}

View on GitHub (pinned to a7cb36712d)

Solutions

1. Set at least one of ItemName or ItemNames before calling Validate().
2. Add an earlier guard in the calling code to reject empty user input before constructing the param.
3. If counting is optional, skip the task entirely rather than validating an empty param.

Example fix

// before
var param = new CountInventoryItemParam { GridScreenName = ... };
param.Validate(); // throws — no item specified

// after
var param = new CountInventoryItemParam { GridScreenName = ..., ItemName = "摩拉" };
param.Validate();

if (string.IsNullOrWhiteSpace(param.ItemName) && param.ItemNames.Count == 0)
{
    // no items specified — abort or prompt user
}

static bool HasAtLeastOneItem(CountInventoryItemParam p)
    => !string.IsNullOrWhiteSpace(p.ItemName) || p.ItemNames.Count > 0;

try { param.Validate(); }
catch (ArgumentException ex) when (ex.Message.Contains("不能同时为空")) { /* prompt for item name */ }

When it happens

Trigger: Constructing a CountInventoryItemParam without setting ItemName or ItemNames (both left at defaults: null and empty list), then calling Validate().

Common situations: A script creates the param object but forgets to populate the item name(s). The item name was read from user input that turned out to be empty. A deserialized config object had both fields blank.

Related errors

• 参数ItemName和ItemNames不能同时使用
• 参数ItemNames不能包含空名称
• 材料名不能为空。
• 合成个数必须大于 0。
• WebView 操作名称不能为空。

AI-assisted analysis of babalae/better-genshin-impact@a7cb36712d (2026-08-13). Data as JSON: /api/errors/c6c9cb4577b58d1c. Report an issue: GitHub.