[英]Text box in gridview not auto post back
我的gridview
在回发时缺少先前的数据。 在这种情况下,当我从gvFinalised
gridview中检测到不足的库存时,得到类别,然后得到库存最高的产品并显示在gvSuggested
gridview中。
但是,在我的gvFinalised
,我们说三种产品中的三种不同类别是不够的,比如说它们是面条,罐头食品和饮料。 它应该在gvSuggested
显示三个类别不同的产品,每个类别中的库存最高。
但是,我现在的问题是,它只显示最后一项。 例如,在这种情况下,饮料。 饮料之前的数据将全部清除。
这是有关如何检测库存不足的代码:
protected void tbQuantity_TextChanged(object sender, EventArgs e)
{
tempList = new Dictionary<string, string>();
distSPUItemList = new Dictionary<string, int>();
bool valid = true;
string quantityStr = "", prodID = "";
int packagesNeeded = 0, totalUnit = 0, quantity = 0;
//Get the total packages needed for this distribution
packagesNeeded = prodPackBLL.getPackagesNeededByDistributionID(distributionID);
foreach (GridViewRow gr in gvFinalised.Rows)
{
//Clear label error message
Label lblCheckAmount = gr.FindControl("lblCheckAmount") as Label;
lblCheckAmount.Text = "";
//Get the product variant ID which set as DataKeyNames and product quantity from selected row index
prodID = gvFinalised.DataKeys[gr.RowIndex].Value.ToString();
var tbQuantity = gr.FindControl("tbQuantity") as TextBox;
if (tbQuantity != null)
{
//Check if the input is numeric
quantityStr = tbQuantity.Text;
if (!int.TryParse(quantityStr, out quantity))
{
lblCheckAmount.Text = "Non-numeric input!";
TextBox tb = (TextBox)gr.FindControl("tbQuantity") as TextBox;
}
else
{
//Add both objects into Dictionary
tempList.Add(prodID, quantityStr);
}
}
}
//Portion to check the storage level for each products stored in tempList
//Loop thru tempList. key as prod variant ID, tempList.Keys as quantity
foreach (string key in tempList.Keys)
{
//Get total unit of each products
totalUnit = prodPackBLL.getTotalProductUnit(key);
valid = true;
//Check if unitQuantity exceed storage level
if (((Convert.ToInt32(tempList[key])) * packagesNeeded) > totalUnit)
{
//Get the label control in gridview
foreach (GridViewRow gr in gvFinalised.Rows)
{
if (key == gvFinalised.DataKeys[gr.RowIndex].Value.ToString())
{
//Change the color of textBox and display the insufficient message
valid = false;
//Automatically uncheck the checkBox if invalid
TextBox tb = (TextBox)gr.FindControl("tbQuantity") as TextBox;
Label lblCheckAmount = gr.FindControl("lblCheckAmount") as Label;
lblCheckAmount.Text = "Insufficient stock!";
//Here is the place where I collect the data and display in gvSuggested
getSuggested(key);
}
}
}
else
{
if (totalUnit - ((Convert.ToInt32(tempList[key])) * packagesNeeded) == 0)
{
foreach (GridViewRow gr in gvFinalised.Rows)
{
if (key == gvFinalised.DataKeys[gr.RowIndex].Value.ToString())
{
valid = true;
Label lblCheckAmount = gr.FindControl("lblCheckAmount") as Label;
lblCheckAmount.Attributes["style"] = "color:#ffb848";
lblCheckAmount.Text = "Stock becomes 0!";
}
}
}
}
//Portion to check for valid products to be inserted into distSPUItemList
if (valid)
{
//Set the textBox color
foreach (GridViewRow gr in gvFinalised.Rows)
{
if (key == gvFinalised.DataKeys[gr.RowIndex].Value.ToString())
{
TextBox tb = (TextBox)gr.FindControl("tbQuantity") as TextBox;
}
}
//Validated items store into another list to perform Sql statement when button on click
distSPUItemList.Add(key, (Convert.ToInt32(tempList[key]) * packagesNeeded));
}
}
}
这是用于填充我的gvSuggeted
的getSuggested()
方法:
protected void getSuggested(string prodVariantID)
{
string categoryName = prodPackBLL.getCategoryByProdVariantID(prodVariantID);
//Get the list of substitute product with highest storage level sorted in descending order
List<ProductPacking> prodSubstitute = new List<ProductPacking>();
List<string> lstCategory = new List<string>();
List<string> prodIDList = new List<string>();
List<DistributionStandardPackingUnitItems> distSPUItem = new List<DistributionStandardPackingUnitItems>();
distSPUItem = this.SuggestedItems;
//Find list of substitute with highest stock level and replace the product
prodSubstitute = prodPackBLL.getProductIDWithHighestStock(categoryName);
for (int count = 0; count < prodSubstitute.Count; count++)
{
//To prevent duplication of same product and select those catories which are in current category and counting them and taking them if there are less than 1 occurrences
if (!prodIDList.Contains(prodSubstitute[count].id) && !(lstCategory.Where(x => x.Equals(categoryName)).Select(x => x).Count() >= 2))
{
prodIDList.Add(prodSubstitute[count].id);
lstCategory.Add(categoryName);
}
}
for (int j = 0; j < prodIDList.Count; j++)
{
//Get the detail of the product added into prodList and add it into distSPUItem List
distSPUItem.Add(packBLL.getSPUItemDetailByID(prodIDList[j]));
}
gvSuggested.DataSource = distSPUItem;
gvSuggested.DataBind();
this.SuggestedItems = distSPUItem;
}
private List<DistributionStandardPackingUnitItems> SuggestedItems
{
get
{
if (ViewState["SuggestedItems"] == null)
{
return new List<DistributionStandardPackingUnitItems>();
}
else
{
return (List<DistributionStandardPackingUnitItems>)ViewState["SuggestedItems"];
}
}
set
{
ViewState["SuggestedItems"] = value;
}
}
回发时,我使用了viewState
来存储数据。 但是,它不起作用。 gvSuggested中的这一行:
this.SuggestedItems = distSPUItem;
导致我在gridView中的文本框无法自动回发。 如果我删除了它,上面的错误再次出现。 有指导吗? 提前致谢。
请启用tbQuantity文本框EnableAutoPostBack = True
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